I figure to buy a new mobo is the only way. My ASUS P2B-F is pissing me off. Can't even run at 504 stable. So I ask please, tell me the best mobo to get for overclocking?

P3-450
256MB (125MHz) RAM
NVidia TNT2 ULTRA
Maxtor 10.1GB 7200
Creative 5X DVD
SB Live.

What'r my options?