Try using coolbits, which is essentially the nVidia drivers. You can find that <a href="http://www.softpedia.com/get/Tweak/Video-Tweak/GeForce-Overclocking-CoolBits-Reg.shtml" target="_blank">here</a>.<br />
Also, I would get aftermarket cooling if you want to get some good clocks, and if your card only has a heatsink, rig a fan up to it.
You can get a Good overclock from a 7600GS especially at those load temps you have som good overclocking headroom. I would use Coolbits to overclock your card mate. Also there are some V-mods for that card .<br><br>
V-mod : <a href="http://forums.guru3d.com/showthread.php?threadid=180831" target="_blank">http://forums.guru3d.com/showthread.php?threadid=180831</a><br><br>
Coolbits :<a href="http://www.overclockers.com.au/techstuff/a_coolbits/" target="_blank">http://www.overclockers.com.au/techstuff/a_coolbits/</a>
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