Man...I think I'm totally helpless... When I run the setup for the driver you provided, it said:"This driver is not compatible with your display adapter(s) installed on the computer". (can't be). I guess the only option now is the 3danalyze thing...

Thanks. Ill try it out

Here's my machine: Windows XP Professional Service Pack 2 _ Intel Pentium IV 2.4GHz _ 512MB RAM _ Video card:
+Name: ATI Rage 128 Pro ULTRA GL AGP
+Memory: 32MB
+main driver: ati2dvaa.dll (version: 6.13.0010.5019)
+Chip: RAGE128PRO II (AGP 4X/PCI)
+DirectX 9.0c

I installed the game Star Wars: Jedi Knight II: Jedi Outcast successfully. I clicked the "Analyze My Computer" button in the menu, and it said my machine is qualified to play the game. But when I launch the game, the following error appeared:

JK2: v1.03 win-x86 May  3 2002
Initialising zone memory .....
----- FS_Startup -----
Current search path:
D:\Tung\LucasArts\Star Wars JK II Jedi Outcast\GameData\base\assets5.pk3 (4 files)
D:\Tung\LucasArts\Star Wars JK II Jedi Outcast\GameData\base\assets2.pk3 (289 files)
D:\Tung\LucasArts\Star Wars JK II Jedi Outcast\GameData\base\assets1.pk3 (8011 files)
D:\Tung\LucasArts\Star Wars JK II Jedi Outcast\GameData\base\assets0.pk3 (6674 files)
D:\Tung\LucasArts\Star Wars JK II Jedi Outcast\GameData/base

----------------------
14978 files in pk3 files
execing default.cfg
couldn't exec jk2config.cfg
couldn't exec autoexec.cfg
...detecting CPU, found Intel Pentium IV

------- Input Initialization -------
Skipping check for DirectInput
Joystick is not active.
------------------------------------
----- Client Initialization -----
----- Initializing Renderer ----
-------------------------------
----- Client Initialization Complete -----
--- Common Initialization Complete ---
Working directory: D:\Tung\LucasArts\Star Wars JK II Jedi Outcast\GameData
----- R_Init -----
Initializing OpenGL subsystem
...initializing QGL
...calling LoadLibrary( 'C:\WINDOWS\system32\opengl32.dll' ): succeeded
...setting mode 3: 640 480 FS
...using desktop display depth of 16
...calling CDS: ok
...registered window class
...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)
...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
----- CL_Shutdown -----
RE_Shutdown( 1 )
-----------------------
GLW_StartOpenGL() - could not load OpenGL subsystem

I read the troubleshooting guide, and I found the "Could Not Load OpenGL Subsystem" section. It said I must make sure that my card is in the list which it provided, but my card is really in there!!! I don't know why this is possible. Can anyone please help me out with this 3danalyze? I really want to play this thing, but I don't know how to use the tweaker. Thanks.