Hmmm im sorry i couldnt do more for ya, but thats about all i can think of, maybe the gf is just a better card, i don tknow much about ati's...but i do know that the drivers were weird, but that doesnt seem to be the problem, yeah i guess just go for that gf...there are some sweet cards out there for around 35 bucks that will probably outpreform those cards, i cant remeber them i saw a tread about it somwhere in the video card section you could check there, but other than that i dont know what else to tell ya.
Matt