Quake III suddenly stopped playing.Pls help!

I have an Athlon XP 2400+ PROCESSOR,256 DDR RAM.on an Asus motherboard with integrated video graphics,and no acclerator card.I have been playing Quke III on this machine quite for some time but suddenly today before the screen loads the message shows “Could not load open_GL subsystem”.From where do I download this open GL for my Win 98.Pls help!

You dont need to “download” OpenGL, its part of Windows. You only need drivers that support OpenGL. Since OpenGL worked before you must have done something to nuke it.

Installed anything lately? Matlab for example?