heres the situation:

i bought a xfx 6600gt agp 128mb video card for my computer.
my specs are:

p4
1 gig pc2100 ram
90g & 180g hd
its a sony viao

i install the card, install a game, "motogp2" and "the sims2" both games have stretched polygons and some polygons missing. i thought it was defective, return and exchange.

its doin the same thing again, and i dunno y. is there some secret settings i dunno about? could this card be defective as well. its brand new. i dunno what to do, i was wonderin if you guys would have a clue to help me out.