[TechJunkYard]

A four-way Intel box with RHES 3.0 now costs more than the same box with 2003 Enterprise.

Incorrect. Contrary to Lyons' assertion, RHES is licensed per box; 2003 Server is licensed per CPU. So your 4-way box will cost more with 2003 Server ($600 * 4 = $2400) than with ES ($800).

[Doohickey]

I don't know where you're buying stuff, but 2003 Enterprise is good for up to 8 CPUs, right out of the box.