Probleme demo call of duty

salut a tous
quand je lance la demo de call of duty que j'ai telechargé ce message apparet et tout s'arrete

GLW_StartOpenGL() - could not load OpenGL subsystem

CoD Beta build win-x86 Aug 19 2003
----- FS_Startup -----
Current language: english
Current search path:
D:\PROGRA~1\CALLOF~1\main\pak0.pk3 (3172 files)
D:\PROGRA~1\CALLOF~1/main
D:\PROGRA~1\CALLOF~1\main\localized_english_pak0.pk3 (796 files)
localized assets pak file for english

File Handles:
----------------------
3968 files in pk3 files
execing default.cfg
couldn't exec language.cfg
couldn't exec config.cfg
execing autoexec.cfg
Unknown command "cg_fov"
========= autoconfigure
configure.csv: using configuration 1200 cpu MHz 256 sys MB 64 vid MB
Hunk_Clear: reset the hunk ok
...detecting CPU, found Intel Pentium III
Measured CPU speed is 1.70 GHz
System memory is 352 MB (capped at 1 GB)
Video card memory is 64 MB
Streaming SIMD Extensions (SSE) supported

----- Client Initialization -----
----- Initializing Renderer ----
-------------------------------
----- Client Initialization Complete -----
----- R_Init -----
Initializing OpenGL subsystem
...initializing QGL
...calling LoadLibrary( 'C:\WINDOWS\system32\opengl32.dll' ): succeeded
...setting mode 4: 800 600 FS
...using colorsbits of 32
...calling CDS: ok
...registered window class
...created window@0,0 (800x600)
Initializing OpenGL driver
...getting DC: succeeded
...GLW_ChoosePFD( 32, 24, 8 )
...35 PFDs found
...GLW_ChoosePFD failed
...GLW_ChoosePFD( 32, 24, 0 )
...35 PFDs found
...GLW_ChoosePFD failed
...failed to find an appropriate PIXELFORMAT
...restoring display settings
...WARNING: could not set the given mode (4)
...setting mode 4: 800 600 FS
...using colorsbits of 16
...calling CDS: ok
...created window@0,0 (800x600)
Initializing OpenGL driver
...getting DC: succeeded
...GLW_ChoosePFD( 16, 16, 0 )
...35 PFDs found
...GLW_ChoosePFD failed
...failed to find an appropriate PIXELFORMAT
...restoring display settings
...WARNING: could not set the given mode (3)
...shutting down QGL
...unloading OpenGL DLL
----- CL_Shutdown -----
RE_Shutdown( 1 )
-----------------------
Hunk_Clear: reset the hunk ok
GLW_StartOpenGL() - could not load OpenGL subsystem

que doije faire
merci