>>Well, I heard a while back (when the D3D vs OGL issue started to come up) that the reason why so many games were written for D3D and not OGL was that very few graphics cards had OGL drivers built for them at first<<

also certain ppl at ms threatened not to make the games run on windows if they used opengl.
a couple of interesting reads.
http://www.gamecenter.com/News/Item/Textonly/0,78,0-972,00.html?st.gc.gn..pfv
http://www.azillionmonkeys.com/windoze/OpenGLvsDirect3D.html

http://members.xoom.com/myBollux