Whats going on?

Whats going on!!!  Alright, I got a copy of GTA3.  When I try and run it on my computer(Athlon 1.4, Radeon 8500, 256M RAM) I just get a black screen and my whole system locks up(I did just do a test...I played an MP3 as I ran GTA3.  It still locked up, but the MP3 kept playing fine)

Well, I tried it on a Duron 1.2GHz with I think a TNT2 in it, and it worked fine.  I also tried it in a Dual MP1800 with a Matrox G450, and it worked fine, but why can't I get it to work on my computer?!  I have all the latest drivers, including chipset, video, sound...I've checked it all...  The ONLY think I may beable to update is windows...  I still run 98SE, but it says it's compatable with 98, so WHY WONT IT WORK!