Need help with cpu-fan.

Is there a way to increase speed of the cpu-fan? Cant find any settings in my bios.Is there any software to download that can help me out?

I have a P4 2.0A cpu and 512 samsung pc800 rdram on a Asus P4T-E Mobo

Im running it at 2.66 ghz now but i would like to overclock some more and thats why i would like to increase cpu-fan speed if possible

I'd reccomend getting a new , more powerful fan. Overvolting fans is tricky, and a little dangerous