OpenGL and S3TC texture-using with a Geforce2MX

Hello, I have a "problem", I have the Geforce2MX and if I install UT, I can chose only between "Direct3D" and "Software Renderer"
both works, but it looks not good, also D3D not. If I click on the radio-button to list all methods I can also chose OpenGL and S3...
Now there's the "problem":

OpenGL looks really good (somehow better as with the S3TC textures) but it's really dark, so dark that I can't see the Enforcer in "Facing Worlds", and I also can't change the light with "F10" like in D3D. 1. Question: Why is that and how I canchange it?

And if I chose the S3TC technique it looks ok, but not so good like openGL and also it's slower as OpenGL, is that normal? I had think that a gefroce2MX is fast enough to decompress the S3TC textures and display it without a lower framerate. 2. Question What can I do that the S3-textures look better as the normal textures under OpenGL? have I do something wrong in the settings(no, I have installed anything from the 2nd CD-ROM :} )?
And how I can speed it up? it looks that I have less as 28fps with the S3TC textures. :{

here is my config:

AMD Athlon 1000MHz
192 MB PC133 RAM
(Gigabyte) nVidia GeForce2MX
windows-desktop: 1024x768/16bit
in-game(I have try a few settings): 1024x768/16bit
1024x768/32bit
Windows 98 SE

It would be happy if somebody could help me! :}

phiny greetings, Delphi :}

Nobody can help me? :|

Originally posted by 8-4-7-2

Did you use Vogel's OpenGL driver or standard OpenGL?

You can change the gamma in the options menu

Click to expand...

Hello, I have use nothing speacial... the standard-drive, can you tell me wich OpenGL-driver you mean?

I have turn the Gamma full on but it's still dark... :|

phiny Greetings, Delphi