Castle Wolfenstein 'could not load OpenGL subsystem'

My castle wolfenstein, is not working. I have been searching for months for an answer, and i still have not found an answer. I have Windows 98. My graphics card is an ‘ASUS AGP-V7100’. One day i was playing Return to castel wolfenstein, then i go to bed, and the next day i want to play multiplayer, and then this message appears!
Here is exactually what it says.

Wolf 1.0.0 win-x86 Nov 13 2001
----- FS_Startup -----
Current search path:
C:\Program Files\Return to Castle Wolfenstein\main\sp_pak2.pk3 (232 files)
C:\Program Files\Return to Castle Wolfenstein\main\sp_pak1.pk3 (1342 files)
C:\Program Files\Return to Castle Wolfenstein\main\pak0.pk3 (4775 files)
C:\Program Files\Return to Castle Wolfenstein/main


6349 files in pk3 files
execing default.cfg
couldn’t exec language.cfg
couldn’t exec wolfconfig.cfg
execing autoexec.cfg
Hunk_Clear: reset the hunk ok
…detecting CPU, found AMD w/ 3DNow!
Bypassing CD checks
----- Client Initialization -----
Cmd_AddCommand: map_restart already defined
----- Initializing Renderer ----

----- Client Initialization Complete -----
----- R_Init -----
Initializing OpenGL subsystem
…initializing QGL
…calling LoadLibrary( ‘C:\WINDOWS\SYSTEM\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 )
…23 PFDs found
…GLW_ChoosePFD failed
…GLW_ChoosePFD( 32, 24, 0 )
…23 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 )
…23 PFDs found
…GLW_ChoosePFD failed
…GLW_ChoosePFD( 16, 16, 0 )
…23 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 loved this game! i really want to get it working again. Please! if any body can help me with this can u contact me at ‘theshaggmachine@hotmail.com’
Thanx, Simon.

I got the same message
GLW_StartOpenGL() - could not load OpenGL subsystemge
I got GeForce4 mx420