How much do you have to consider joey?
Take a look at Gigabytes EX58-UD5A Mainboard with on board TI firewire ($200), 6GB of corsair DDR3 ram ($120), i7 980x ($800) or i7 930 ($200), a seasonic 700x PSU ($140 - this is truely silent unlike all the rest of the bullshit out there), 128GB OCZ MLC SSD for the operating system ($200- the more of these the merrier), 2 x 1TB Samsung spinpoints in RAID config for storage ($50 each), GFX e.g. ATI 5850 (3 monitor outputs) ($250), 2TB western digital USB 3.0 backup drive ($200).
Nice ventilated but soundproofed case e.g. fractal design r2 or better ($100). Plane ticket for me to come over and sort all the shite out

($300). Add $50 thermalright cooler if you want to get the most out of your chip by OCing.
Thats about $2000 for the i7 980x setup with solid state drive, get it all configured right and you'll probably have the fastest desktop in the world.
Edit:

Looks like thewintersnow is on the case too.