E.T

bonjour.je vien de telécharger wolfenstein.j'ai un probleme le jeu ne ce lance pas.au lieu de ce lancer j'ai la console qui s'ouvre et apré il ne se passe rien.
si quelqu'un c'est quoi faire.dans la console et ecri"GLW_startopenGL() - could not load openGL subsystem"
sa clignote en rouge et dessous
"ET 2.55 win-x86 May 27 2003
----- FS_Startup -----
Current search path:
C:\PROGRA~1\WOLFEN~1\etmain\pak0.pk3 (3725 files)
C:\PROGRA~1\WOLFEN~1\etmain\mp_bin.pk3 (4 files)
C:\PROGRA~1\WOLFEN~1/etmain

----------------------
3729 files in pk3 files
execing default.cfg
couldn't exec language.cfg
couldn't exec autoexec.cfg
Hunk_Clear: reset the hunk ok
...detecting CPU, found AMD w/ 3DNow!
Bypassing CD checks
----- 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 desktop display depth of 32
...calling CDS: ok
...registered window class
...created window@0,0 (800x600)
Initializing OpenGL driver
...getting DC: succeeded
...GLW_ChoosePFD( 32, 24, 0 )
...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
...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
...assuming '3dfxvgl' is a standalone driver
...initializing QGL
...WARNING: missing Glide installation, assuming no 3Dfx available
...shutting down QGL
----- CL_Shutdown -----
RE_Shutdown( 1 )
-----------------------
GLW_StartOpenGL() - could not load OpenGL subsystem"
je ni comprend rien. merci

c'est quoi lopen gl? pourtant j'y et deja joué avec un pc avec une configu bien plus minable ?que faire? si quelq'un a une info merci.