XP Upgraded from 98. Now games don't work. Anyone want to try and help?

[Quall999]

When my PC wasupgraded to winXP, it didn't prompt us with anything asking where to put it. It overwrote win98 instead of win2000. Now whenever I try and go into any games (JK2, SOF2, Duke Nukem 3D, some others) They don't start and i get a message talking about openGL. I have a geforce2 btw with openGL.
Anyone Here have this problem before on XP, or know how to fix it?