Video Card Problem Or What????, Game Freezes Up! Options

[Viper Strike331]

MOH_SPEARHEAD caused an invalid page fault in
module ATIO9XXX.DLL at 016f:6902333f.
Registers:
EAX=df328c88 CS=016f EIP=6902333f EFLGS=00010202
EBX=0375bcd4 SS=0177 ESP=0201f7b8 EBP=3fc0d555
ECX=015ffde0 DS=0177 ESI=00000010 FS=214f
EDX=000000cf ES=0177 EDI=3ecf5550 GS=0000
Bytes at CS:EIP:
89 38 89 68 04 83 c0 08 83 ea 01 75 ec 5d 5f 5e
Stack dump:
df328c80 03731648 03728000 69082cd9 000000d0 00000010 00000000 03728000 00000000 00000000 d320ec80 00000002 00000006 0375b1f4 00000004 00000000


I get this error, and sometimes the blue screen of death when playing moh, and just recently while i was playing Rainbow Six. I've tried formatting and starting all over, that don't help. I've tried different Video Card Drivers and that don't help.
I have a ATI Radeon 8500 128 meg card, no overclocking on the vid card, but i have a pentium 4 1.9 ghz oc'd to 2.01. 384 meg ddr ram. i've tried differnet vid card settings, and that dont seem to matter. What Refresh Rate is optimal? i use 100mhz, and i've changed the settings and it dont help. If anyone can translate this garbage it's giving me, please try to help. The lockups are just random, sometimes i can play for 10 minutes, sometimes i can play 1 hour. but in the end it always lockups eventually. almost like the vid card is overworking itself. and otu of nowhere just freezes up?? Don't know, someone please help!!!!!