my pc ill make for gaming,
case- antec 200
motherboard- asus
processor- intel core i7 extreme
ram- dominator (8gb) @ 1600 mhz
hard drive (boot drive) an ssd drvie 80gb to boot windows faster probably a vertex
hard drive- samsung spinpoint 1tb for storage
hard drive- another ssd, 250 gb for games
2x gtx 275's
750 watt psu
dvd+cd read and rw drive
bluray drive
my current 22in monitor, cybersniper mouse and g 15 keyboard with 2.1 speakers

and ofcourse..
the main part..
diablo 3..
(ive been saving for this pc since i first started to make them a few years ago (putting small change away) and alot of this stuff will probably change when i actually make it next month..

EDIT; Oh yeah and ofcourse windows 7 ultimate because its got the xp compatability mode so i can run D2 without the crappy vista issues.. =]