Before PDC, I decided I'd need a new PC for testing purposes - Team System (Beta 3 coming soon), IIS 7.0 on Longhorn Server as well as Windows Vista definitely do run a lot faster when not in VirtualPC. That's what I got myself:
That's a Shuttle XPC SB81P, a Pentium P4 630 (3Ghz, 2MB Cache, FSB800), 2GB of RAM, a 250GB WD SATA HDD and one of my old DVD-RAM drives. Nice setup, and not too expensive either.