Why so much power? You can spend about a $1200 on a midrange system that will do everything well, and save your self $2800.
and raptors are way overpriced, go with 4, 80 gig Seagate’s 7200.10 in a RAID 0, it will twice as fast, and cost less, but the random seek time will be slightly longer, at $50 a pop, you can get 4 for $200, with much higher performance with out the price. Or you could get 160's for $65 a piece, still beat the price, space, and speed.
http://www.newegg.com/Product/Produc...82E16822148107
http://www.newegg.com/Product/Produc...82E16822148105
For the video card, do you really need that much power? don’t blow that much money on a card, especially with DX10 around the corner, get a mid range card for $250, like a 7800gt, wait a year for DX10 to be out and about and then get a nice DX10 card.
for the sound, fatality branded products are over priced, find the non fatality branded card and save some money, also, 7.1 is not really worth it, 5.1 is all you really need, any direction of sound can be accurately simulated with 5.1, imho 7.1 is just a gimmick.
one quick note to Plaid13, there are a lot of idiots on the newegg review pages, i'd say take each with a grain of salt, but eating spoonfulls of salt is nasty.