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Looks decent except for one thing... Celeron ... Ugh! I have a Celeron 1.4GHz systems and an AMD Athlon XP 1600+ (1.39GHz). My Athlon stomps my Celeron even on a bad day, and they are comparably spec'd processors! IMHO, avoid Celeron like the plague. If you have to go Intel, go Pentium or go elsewhere. You'll be much happier with the performance.
And yes, I'm speaking of performance as a server. I've run both, and Celerons bog even with moderate loads.