Nice man. I know exactly what you're going through; I just built myself a new rig a few weeks ago. Nothing quite as impressive as the lumbering giant you gave birth to, but...
NZXT Apollo Black ATX case
Gigabyte MA790XT-UD4P MoBo
AMD Phenom II X3 BE (currently clocked at 3.6 GHz)
HIS Radeon 4870 512 IceQ4+ Turbo (Factory OC'd)
4 gigs Corsair DDR3 RAM 1666MHz
500GB Western Digital Caviar HDD
Ultra LSP750 750-Watt PSU
Cooler Master Hyper Z600R CPU heatsink
Currently running the Windows 7 RC to see what that's all like. I like it so far.
It's a solid computer, and I didn't have to break the bank to build it