// Launch commands
// -console -heapsize 524288 -dxlevel 81 -gl -refresh 75 

// Casey's Source Config
// Updated 6/26/06

// _Set netcode settings_
// _adjusts hitboxes and netcode settings for optimal registration_

cl_cmdbackup 2
cl_cmdrate 101
cl_interp 0.01
cl_interpolate 1
cl_lagcomp_errorcheck 1
cl_lagcompensation 1
cl_updaterate 101
cl_smooth 1
rate 25000

// _Set graphics settings_
// _adjusts graphics settings to boost framerate_

cl_ejectbrass 0 // _disables shells flying out of guns_
cl_forcepreload 1 // _forces preload to help increase performance_
cl_phys_props_enable 0 // _disables trash and cans etc_
cl_phys_props_max 0 // _disables trash and cans etc_
cl_ragdoll_physics_enable 1 // _disables dead animations and bodies_
cl_show_splashes 0 // _disables splashes when in water_
fps_max 101 // _caps FPS_
mat_forceaniso 0 // _disables anisotropic filtering_
mat_antialias 0 // _disables antialiasing_
mat_bloomscale 0
mat_bumpmap 0 // _disables bumpmapping_
mat_clipz 1 // _disabled non visible object rendering_
mat_fastnobump 1 // _faster bump mapping_
mat_fastspecular 1 // _fast specular lighting_
mat_mipmaptextures 1 // _texture quality decreases with distance_
mat_hdr_enabled 0 // _disables high dynamic range lighting_
mat_picmip 0 // _lower texture quality--set between 0 and 4_
mat_reducefillrate 1 // _reduces shader fill rate_
mat_specular 0 // _disables specular lighting_
mat_trilinear 0 // _disables trilinear filtering_
mat_wateroverlaysize 16 // _lowers water quality_
mat_vsync 0 // _disables vertical synchronization_
mp_decals 50 // _how many bullets etc will be shown_
muzzleflash_light 0 // _disables muzzleflash_
r_avglight 0 // _disables average lighting_
r_cheapwaterend 1 // _worse water rendering_
r_cheapwaterstart 1 // _worse water rendering_
r_decal_cullsize 2 // _lower texture quality at distance_
r_decals 200 // _disables player sprays_
r_drawdetailprops 0 // _disables detail props_
r_drawflecks 0 // _disables bullet impacts_
r_drawmodeldecals 0 // _disables decals on models_
r_dynamic 0 // _disables dynamic lighting_
r_eyes 0 // _removes eyes from player models_
r_lightaverage 0 // _disables average lighting_
r_lightinterp 0 // _disables light interpolation_
r_lod 0 // _adjusts model quality--set between -5 and 5_
r_occlusion 0 // _disables occlusion--lowers image quality but gains FPS_
r_propsmaxdist 100 // _lower object fading distance_
r_renderoverlayfragment 0
r_rootlod 2 // _lower overall game detail level_
r_shadows 1 // _set to 0 to disable shadows (not recommended)_
r_teeth 0 // _removes teeth from player models_
r_waterforceexpensive 0 // _disables high-quality water_
rope_averagelight 0 // _disables average lighting on ropes_
rope_smooth 0 // _disables antialiasing on ropes_
rope_subdiv 0
rope_wind_dist 0 // _disables wind effects on ropes_

// _Set instruction sets_
// _note: verify processor support before enabling_

// r_3dnow 1 // _enables 3DNow! instruction set_
// r_mmx 1 // _enables MMX instruction set_
// r_sse 1 // _enables SSE instruction set_
// r_sse2 1 // _enables SSE2 instruction set_

// _Set violence settings_
// _increases blood to help you see hits better_

violence_ablood 1
violence_agibs 1
violence_hblood 1
violence_hgibs 1

// _Set HUD and xhair settings_
// _adjusts HUD and xhair for easy viewing_

cl_crosshairalpha 999 // _bright crosshair_
cl_crosshairusealpha 1 // _enables adjustable crosshair brightness_
cl_c4progressbar 1 // _enables C4 progress bar_
cl_radaralpha 255 // _maximum radar brightness_
cl_radartype 1 // _enables solid radar_
hud_centerid 1 // _centers player IDs_
net_graph 3 // _enables net_graph 3--CAL required!_
net_graphpos 2 // _adjusts netgraph position-set between 1 and 3_

// _Set various settings_

budget_show_history 0 // _disables history graph_
cl_downloadfilter "nosounds" // _disables annoying sound downloads_
jpeg_quality 100 // _high quality screenshots_
mat_monitorgamma 1.6 // _maximum ingame brightness_
net_graph 3 // _enables net_graph 3--CAL required!_
net_graphpos 2 // _adjusts netgraph position-set between 1 and 3_
sv_forcepreload 1 // _forces preload to help increase performance_

clear
echo "Digg's config loaded"

UDPDATE 18/09/06

I have found another config that should be run a dxlevel 80 depending on your computer specs, it is a modded version of wally3k's config, it gives a nice balance between GFX and performance, enjoy, Change things like sensitivity etc. to your playing style. 

THANKS WALLY3k

////Ordered Cvars
//Mat
mat_forcemanagedtextureintohardware "1"
mat_antialias "0" //AA Level, set to 0 if crap graphics card (Below Ati9800/Nvidia6600)
mat_forceaniso "2" //AF Level
mat_picmip "0" //Texture Level
mat_reducefillrate "1" //Shader Detail
mat_disable_bloom "1"
mat_bumpmap "0"
mat_clipz "1"
mat_diffuse "1"
mat_wateroverlaysize "16"
mat_mipmaptextures "1"
mat_compressedtextures "1"
mat_bloomscale "0" 
mat_fastnobump "1"
mat_disable_fancy_blending "1"
mat_filtertextures "1"
mat_fastspecular "1"
mat_filterlightmaps "1"
mat_disable_lightwarp "1"
mat_disable_ps_patch "1"
mat_hdr_enabled "0"
mat_specular "0"
mat_parallaxmap "0"
mat_softwareskin "0"
mat_softwarelighting "0"
mat_forcehardwaresync "0"
mat_hdr_level "0" 

//Cl
cl_phys_props_enable "0"
cl_phys_props_max "0"
cl_ragdoll_physics_enable "1"
cl_ragdoll_collide "0"
cl_ejectbrass "0"
cl_show_splashes "0"
cl_forcepreload "1"
cl_showfps "0"
cl_downloadfilter "nosounds"
cl_allowupload "1"
cl_allowdownload "0"
cl_autohelp "0"
cl_detail_max_sway "0"
cl_detail_avoid_recover_speed "0"
cl_detail_avoid_force "0"
cl_radaralpha "255" //Radar more visible
cl_radartype "1" //Set to 1, allows radaralpha to be used
cl_autowepswitch "0"
cl_c4dynamiclight "1"
cl_showtextmsg "1"
cl_locationalpha "150"
cl_timeout "30"
cl_drawmonitors "0"
cl_detaildist "0"
cl_detailfade "0"
cl_wpn_sway_scale "0"

//R
r_shadows "1"
r_propsmaxdist "0"
r_lod "0" //Model Related
r_decal_cullsize "0.5"
r_spray_lifetime "2"
r_waterforceexpensive "0"
r_eyemove "0"
r_avglight "1"
r_rootlod "0" //Model Related
r_decals "500"
r_drawdetailprops "0"
r_drawflecks "0"
r_ropetranslucent "0"
r_renderoverlayfragment "0"
r_lightmap "-1"
//r_cheapwaterstart "1"
//r_cheapwaterend "1"
//r_WaterDrawRefraction "0"
//r_WaterDrawReflection "0"
r_waterforcereflectentities "0"
r_teeth "0"
r_flex "0"
r_drawmodelstatsoverlaymax "1.5"
r_drawmodelstatsoverlaymin "0.1"
r_decal_cullsize "0"
r_eyes "0"
r_eyeglintlodpixels "0"
r_eyesize "0"
r_eyeshift_z "0"
r_eyeshift_y "0"
r_eyeshift_x "0"
r_eyegloss "0"
r_avglightmap "0"
r_radiosity "4"
r_occlusion "0"
r_shadowmaxrendered "16" //Only 16 proper shadows will be rendered, rest will be a blur
r_shadowrendertotexture "1"
r_worldlightmin "0"
r_worldlights "0"
r_avglight "0"
r_lightaverage "0"
r_drawbatchdecals "0"
r_dynamic "1"
r_maxdlights "0"

r_PhysPropStaticLighting "0"
r_visualizeproplightcaching "1"
r_pixelvis_partial "0"
r_ropebatch "0"
r_flashlightmodels "0"
r_updaterefracttexture "0"
r_phong "0"
r_DrawSpecificStaticProp "0"
r_flashlightrendermodels "0"
r_flashlightrenderworld "0"
r_maxnewsamples "3"
r_minnewsamples "1"
r_ambientfactor "2"

mat_framebuffercopyoverlaysize "16"
mat_bloomamount_rate "0"
mat_hdr_tonemapscale_max "2"
mat_hdroverbrightrange "0"

r_SnowEnable "0"
r_SnowParticles "0"
r_SnowInsideRadius "0"
r_SnowOutsideRadius "0"
r_SnowSpeedScale "0"
r_SnowPosScale "0"
r_SnowFallSpeed "0"
r_SnowWindScale "0"

//Rain
r_rainalpha "0"
r_rainalphapow "0"
r_raindensity "0"
r_rainlength "0"
r_RainProfile "0"
r_RainRadius "0"
r_RainSideVel "0"
r_RainSimulate "0"
r_rainspeed "0"
r_RainSplashPercentage "0"
r_rainwidth "0"

//Voice
voice_modenable "0"
voice_forcemicrecord "0"
voice_enable "0"
voice_scale "0"
voice_fadeouttime "0"
voice_dsound "0"

//Snd
snd_duckerthreshold "0.15"
snd_duckerreleasetime "2.5"
snd_duckerattacktime "0.5"
snd_ducktovolume "0.55"
snd_mixahead "0.08"
snd_musicvolume "1.0" 
snd_pitchquality "1"
snd_flushasync

//Dsp
dsp_dist_max "20000.00"
dsp_enhance_stereo "1"
dsp_dist_min "0.0"
dsp_water "14"
dsp_slow_cpu "0"
dsp_enhance_stereo "0"

//Rope
rope_smooth "0"
rope_wind_dist "0"
rope_smooth "0"
rope_averagelight "0"
rope_collide "0"
rope_subdiv "0"
rope_smooth_minalpha "255"
rope_smooth_maxalpha "255"
rope_smooth_maxalphawidth "0"
rope_smooth_enlarge "0"
rope_smooth_minwidth "0"

//Violence
violence_agibs "1"
violence_hgibs "1"
violence_hblood "1"
violence_ablood "1"

//Ai
ai_report_task_timings_on_limit "0"
ai_think_limit_label "0"

//Npc
npc_height_adjust "1"

//Gl
gl_clear "0"

//Lod
lod_TransitionDist "0"

//Scene
scene_showfaceto "0"
scene_showlook "0"
scene_showmoveto "0"

//Spec
spec_scoreboard "0"

//Commentary
commentary_firstrun "0"

//Vprof
vprof_unaccounted_limit "0.3"
vprof_verbose "1"
vprof_graphheight "256" 
vprof_graphwidth "512" 

//Mp
mp_decals "200"

//Fog
fog_enable_water_fog "0"

//Mouse
m_pitch "0.022"
m_filter "0"
m_side "0.8"
m_yaw "0.022"
m_forward "1"
m_customaccel "0"
m_customaccel_scale "0.04"
m_customaccel_max "0"
m_customaccel_exponent "1"
m_mouseaccel1 "0"
m_mouseaccel2 "0"
m_mousespeed "1"
zoom_sensitivity_ratio 1

//Muzzleflash
muzzleflash_light "1"

//Fps
fps_max "101"

//Con
con_enable "1"

//Adsp
adsp_debug "0"

//Props
props_break_max_pieces "0"
props_break_max_pieces_perframe "0"

//Func
func_break_max_pieces "0"

//Jpeg
jpeg_quality "90"

//Blink
blink_duration "0.0"

//Weapon
weapon_showproficiency "0"

//Overview
overview_health "1"

//Soundscape
soundscape_flush

//Hud
hud_fastswitch "0"
hud_centerid "1"
hud_saytext_time "4" //Time in seconds chat displays on screen
hud_deathnotice_time "6" 
hud_drawhistory_time "5"

//Network
rate "30000"
cl_cmdrate "100"
cl_updaterate "100"
cl_interpolate "1"
cl_smooth "1"
cl_lagcomp_errorcheck "1"
cl_lagcompensation "1"
cl_interp "0.01"
cl_resend 0.5
cl_smoothtime "0.01"
cl_pred_optimize "2"
net_maxfragments "1280"

//Netgraph
net_graph "0"
net_graphpos "120"
net_graphheight "730"
net_scale "5"
net_graphsolid "1"
bind "-" "net_graphpos 120; net_graphheight 733; incrementvar net_graph 0 3 3"

//Crosshair
cl_crosshairscale "40000"
cl_crosshaircolor "0"
cl_observercrosshair "1"
cl_dynamiccrosshair "0"
cl_crosshairalpha "999"
cl_crosshairusealpha "1"
cl_crosshairalpha "300"
cl_crosshaircolor "0"
crosshair "1"

//Random
sensitivity "2"
volume "1.0"
suitvolume "1.00"
bgmvolume "1.00"
closecaption "0"
commentary "0"

cl_showfps 1	// show fps


vid_config_x 800  // sets horizontal screen resolution  
vid_config_y 600  

s_2dvolume 0.2	// volume
volume 0.2