Opengl + quake

Bonjour,
Comment doit on faire pour pouvoir tourner la version nécessitant OpenGL de quake 3 (windows 2000).
Carte graphique : 3D kyro prophet 4000xt.

Car quant je lance Quake il me marque :
Q3 1.11 win-x86 Nov 29 1999
----- FS_Startup -----
Current search path:
c:\Q3Ademo/baseq3

----------------------

Running in restricted demo mode.

----- FS_Startup -----
Current search path:
c:\Q3Ademo\demoq3\pak0.pk3 (1387 files)
c:\Q3Ademo/demoq3

----------------------
execing default.cfg
execing q3config.cfg
couldn't exec autoexec.cfg
...detecting CPU, found x86 (P5/Pentium2, MMX)

------- Input Initialization -------
Initializing DirectInput...
Couldn't set DI coop level
Falling back to Win32 mouse support...
Joystick is not active.
------------------------------------
----- Client Initialization -----
----- Initializing Renderer ----
-------------------------------
----- Client Initialization Complete -----
--- Common Initialization Complete ---
Winsock Initialized
Opening IP socket: localhost:27960
Hostname: DIAZ
IP: 80.236.87.14
Working directory: c:\Q3Ademo
----- R_Init -----
Initializing OpenGL subsystem
...initializing QGL
...calling LoadLibrary( 'C:\WINDOWS.003\System32\opengl32.dll' ): succeeded
...setting mode 3: 640 480 FS
...using desktop display depth of 32
...calling CDS: ok
...registered window class
...created window@0,0 (640x480)
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 (3)
...setting mode 3: 640 480 FS
...using colorsbits of 16
...calling CDS: ok
...created window@0,0 (640x480)
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

Merci de votre aide