kirin, i am running a geforce DDR on win98 (us edition)... with no probs....
the only i can think of is to make sure you installed the "win9x" drivers and not the ones designed for windows 2000 "w2k"
if worse comes to worse, when in safemode, change your video driver back to VGA, then reboot, then change them back to your original geforce drivers... no harm done...
-bigred