Ahh, I get it now... after you install the drivers you have to pickup a registry update for it to enable stuff on the "Hardware Options" tab on the display-settings-Advanced-GeForce2 GTS-Additional Properties menu. The registry file can be dl'd for win95/98/me at:
<A HREF="http://www.geforcefaq.com/files/coolbits.reg" target="_new">http://www.geforcefaq.com/files/coolbits.reg</A>
and for win2k at:
<A HREF="http://www.geforcefaq.com/files/coolbitsw2k.reg" target="_new">http://www.geforcefaq.com/files/coolbitsw2k.reg</A>
then just "run" that file, and it updates the system registry. Overclocking GeForce 2 GTS is cool!