Ahh... the fallacy of clock speed.
Stay away from celeron period. Pick up a low end p4 if you absolutely must have intel. Otherwise, for the same price as that celeron, you can pick up an AXP of some sort (a 2500 barton is $90 at newegg) that will far and above outperform it.
EDIT: I realize this post sounds like I'm an AMD f@nboy. (wtf? that word is filtered?)