Game error. Please Help!

[Power UP]

I have an Pentium 3 866Mhz processor on 815e motherboard with 512Mb SDRAM.
I am unable to play Return to Castle Wolfenstein in Windows XP professional SP2.
I was able to play the game in Windows 98Se. I get an OpenGL error.
This occurs in almost all the Quake 3 based OpenGL games (i.e. Urban Terror etc.)
I have installed the latest video and audio drivers. I have also installed DirectX 9c. But the problem still persists. Please help.

Here is the error for Urban Territory:-

ioQ3 1.33urt win-x86 Apr 2 2007
----- FS_Startup -----
Current search path:
D:\Program Files\UrbanTerror\q3ut4\zpak000.pk3 (6139 files)
D:\Program Files\UrbanTerror/q3ut4
D:\Program Files\UrbanTerror/baseq3

----------------------
6139 files in pk3 files
execing default.cfg
execing q3config.cfg
execing autoexec.cfg
Hunk_Clear: reset the hunk ok
...detecting CPU, found generic

------- Input Initialization -------
No window for DirectInput mouse init, delaying
Joystick is not active.
------------------------------------
----- Client Initialization -----
Couldn't read q3history.
----- Initializing Renderer ----
-------------------------------
QKEY found.
----- Client Initialization Complete -----
----- R_Init -----
Initializing OpenGL subsystem
...initializing QGL
...calling LoadLibrary( 'D:\WINDOWS\system32\opengl32.dll' ): succeeded
...setting mode 4: 800 600 FS
...using colorsbits of 32
...calling CDS: failed, bad mode
...trying next higher resolution: 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( 16, 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

I was able to play these games on 98Se but not in Windows XP Professional SP2.
Please help:cry: