proccesor- Intel Core 2 Extreme QX9650 Yorkfield 3.0GHz
motherboard for crossfire set ups(2 ati cards)- ASUS MAXIMUS EXTREME LGA 775 Intel X38 ATX Intel Motherboard, its also set up for watercooling which is nice
motherboard for sli(2 nvidia gpu's)- ASUS Striker Extreme LGA 775 NVIDIA nForce 680i SLI ATX The Ultimate Gaming Motherboard
(if you want to wait a month or 2 nviidias releasing their new chipset which is the 700 series and it will be able to do either tri sli or quad sli which is 3 and 4 graphics cards, which for you would be fukin awsome
ram, if your that labour intesnsive id really almost go with 4 gigs of ddr3 for the ati board which supports it or 4 gigs of fast ddr2 for the nvidia board, some recommendations of mine are as follows...
ddr3- prob again id go with corsair CORSAIR 2GB (2 x 1GB) 240-Pin DDR3 SDRAM DDR3 1800 im not realy seeing much for 2 gig sticks, and the main reason i like them is because when you stick 4 gigs of ram in 2 slots, it leaves you 2 slots to upgrade to 8 gigs which is awsome
ddr2- GeIL 4GB(2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (the reason im going geil here is because its one of the only high speed rams that comes in 2x2 gig sticks, but the best of the best is corsair dominator or cruicial balistic
hardrives- id go with 2 wd 150g raptors 10k in raid 0 for the os and then get yourself anther 500gig seagate or wd
powersupplies-
http://www.xtremesystems.org/forums/showthread.php?t=108088
thatll show you some really nice ones id prog go with about 1000watts especially if your gonna look at doing tri sli
cooling- im not real sure how hot this things gonna get, but your sticking a lot of expensive **** in one case, id prob water cool it, and im not the one to ask about that
case- idk jack about full towers so im no help there
dvd- its not a real hard choice, pick a brand you like sony asus liteon are my favorites, then just get a nice dual layor of choice
my main question for you is when you need to build it by, if its not for a couple months, wait for the 700 series nvidia boards to come out and go with a tri sli setup, i think they are also setup to run ddr3 ram which for you is prob nice
hope that gives you some ideas