Secondly Intel have excellent OpenGL support for any "Extreme" brand chipsets (i8xx and up I believe, so roughly anything P4 or better, or bought in the last 3 years time) and these drivers are included with the other "Chipset" drivers.
Have to respectfully disagree with you there. I have the newest drivers for my work PC's Intel Extreme card, and though they gave a great improvement from the original drivers, I still can't run my simple 2D side scroller at a decent framerate. 3D stuff like Terabit's OpenGL cube example runs at about a half a frame a second. While the basic support may be there, the speed certainly isn't. I believe any card without it's own vram is in for a real beating when it comes to Max.