ABIT KT7 FSB Overclocking Possibilities

[JFR]

I have an ABIT KT7 with 512 of PC100 memory. I think ABIT is only allowing me 100/33 FSB speed and I want to try something faster.
Overclocking of the CPU speed cause the machine not to even boot unless I hold down the insert key and then get back into the bios and set everything back to normal.

Any suggestions on how I can speed this Mobo up even when the Processor speed check holds me back?

Thanks,