These are the best three scenerios
ABit BD7 or BD7II or IT7 + P4 1.6A at 2.4GHz with DDR 400. The RAM will run at 400MHz, the FSB at 150MHz (600MHz), and the CPU at 2.4GHz.
Asus P4S533, Samsung PC2700 DDR, and P41.6A @ 2.4GHz. The RAM will run at either 375MHz or 450MHz (preferrably the latter if the RAM can handle it),and the FSB will be 150MHz (600MHz effective) and the processor will be at 2.4GHz
ABit TH7-II, Samsung PC800, P4 1.6A @ 2.4GHz, RAM at PC900, FSB at 150MHz (600MHz effective) and processor at 2.4GHz.
Of those three configuarations, the first will be the easiest to get to, will be the cheapest and will, most likely, be the fastest (if you don't count the 450MHz that <i>might</i> be possible on the P4S533).
<b><i>"A penny saved is a penny earned!"</i></b>