What utility should i use to O/C my TNT2 U with?

I am using the refrence drivers casue the Dimond drivers suck so what utilty can enable me to o/c this card to little faster before i get my Radeon?
Thanks
Alex D

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WTF?? I am just trying to help OK!

use tntclk, it's small a simple!

get it here: http://www.reactorcritical.com/files...a/tntclk12.zip