6600gt problems

Hi all, Having a few problems with my new pny 6600gt
I can play older games like jedi knight 2 just fine.
but when I try to run 3d mark 2003 or play everquest the 3d models are missing pieces and I can see through them. I tried different drivers and even returned the card and got a new one. Any help or suggestions would be appreciated. I did search for some answers but didnt find any. The drivers im using are 66.93. Im thinking maybe my mobo is to old but it does have agp 2.0 and the card is supposed to run in 2x.

system specs
MSI 694t pro via 694x chipset based mobo
intel p3 1ghz
512 mb ram
linksys network card
pny 6600gt agp
soundblaster 5.1 live gamer
enermax 435w power supply
coolermaster case
Aoc 19" crt

I think the best driver for 6600GT's is the 67.03 version maybe those will help.

When I did the initial instal I did remove the old drivers and have done so before each re-instal. I did a search for DriverCleaner, downloaded it and used it. Still no help. I then reformated and did a fresh instal. Still the same problems. Any other advice suggestions etc?

Can you post your nVIDIA settings? That will help eliminate some areas where a possible misconfig occurred.

<font color=green><b><i>Lizards</font color=green></b> do <b>not</b> taste like <b><font color=yellow>chicken</font color=yellow></b>,<b> <font color=yellow>chicken</font color=yellow></b> tastes like <font color=green><b>lizard.</b></font color=green></i>

I enabled fast writes in my bios and now it runs everquest fine. I just cant get it to go past test 2 in 3dmark 2003 without locking up. Im assuming it is via and nvidia driver/chipset incompatability. Im just going to save up to upgrade my mobo, proc, and mem. Thanks for all the ideas. /salute