Well, you are almost at the end of the road. 933 MHz is close to the top speed of Pentium-III Coppermine, so you cannot expect it to go too higher, maybe around 1.1~1.15 GHz not more. You can just increase the FSB though, no multiplier is available for intel processors.
girish
<font color=red>Nothing is fool-proof. Fools are Ingenious!</font color=red>