So I just got my P4:
Pentium 4, 2.93 GHz
1 Gb DDR Ram
1x120 Gb 7200rpm SATA HD
17" LCD Monitor (I know-it's giga irrelevant, but man....I'm from 15" town.)
Everything seems to be working just fine. Much more room to play around.
Question: What's the more important first upgrade: The all-important second gig of ram, or the all-important second hard drive?