Well, I ended up getting the Asus P5E motherboard, 8 gigs of G.Skill DDR2 1066 memory, Sapphire HD 3870 video card, and an eSATA card. I should have it all running by next weekend.

Now I need to start looking at monitors. Does anyone know of good sites that test a wide range of monitors? I think I'll be looking for a 24" widescreen, or in that ballpark.