OpenGL Questioning

Hello, I like to start off that I have a problem that hopefully could be addressed here. See its about OpenGL. I have an old PC with an ATI RAGE 128 PRO video card, and when I got it it stated it supported OpenGL. Usually I play games that doesn’t require OpenGL, until recently.

I was wondering if there was a program that can help me play OpenGL-required games, like Quake 3. I heard of Mesa 3D, would that help? Cheers.

Thing is, this problem has been addressed here many times allready.
Where you have your graphics drivers from? The-allmighty-non-OpenGL-supporty-Microsoft or from ATI?