Are you guys kidding me? This is easy. Cuban scratch ur original, its completely going to change...
AMD64 X2 4800+
DFI LanParty UT SLI-DR Expert Motherboard
2x nVidia 6800GTX 512mb
2x 1Gig of OCZ Ram (wouldn't go too nuts, you've never overclocked before... but you do have lots of money...)
Some big a$$ at least 600Watt PSU SLI CAPABLE!
2x DVD-RW drives
Tuniq Tower 120 Heatsink (You havn't messed with overclocking or water cooling - so I wouldn't risk it)
2x 200+ gig SCSI Seagate drives in raid (15,000rpm version)
Some Lain-Li case I would suggest
Pick up a nice Widescreen 24" (the Dell 2405FPS actually kicks major ***)
Do yourself a treat and pick up the Logitech z-5500 speakers with the Creative X-Fi Extreme Music card.
Who cares about your mouse and keyboard? And I can't recommend anything. I'm the only trackball user on this forum, and I got the best shot too
But... all that may come out past your budget... idk.. go price it