Here is a summary of the specs I intend with the actual models below. The total is looking around $1600 but I am willing to spend a little more if the performance will be notable. Id like to add an addition GTX480 and decent size SSD in the future if it is relevant. Thank for helping a first time builder!!! PLEASE let me know if you would change, add, remove anything... Purpose is gaming and media hookup to a 55" samsung tv.
Intel Core i7-930 Bloomfield 2.8GHz LGA 1366
ASUS P6T LGA 1366 Intel X58 ATX Intel Motherboard
Kingston HyperX T1 Series 6GB (3 x 2GB) DDR3 2000 (PC3 16000)
CORSAIR TX Series CMPSU-950TX 950W ATX12V
EVGA 015-P3-1480-AR GeForce GTX 480 (+1 in the future when I get another $500)
Western Digital Caviar Black WD1501FASS 1.5TB 7200 RPM
COOLER MASTER HAF 932 RC-932-KKN1-GP Black Steel ATX Full Tower
ARCTIC COOLING Freezer 7 Pro Rev.2 92mm
ASUS 8X BD-ROM 16X DVD-ROM 48X CD-ROM SATA Internal Blu-ray Drive
COOLER MASTER HAF 932 RC-932-KKN1-GP Black Steel ATX Full Tower Computer Case
Item #: N82E16811119160
-$30.00 Instant $159.99
Western Digital Caviar Black WD1501FASS 1.5TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
Item #: N82E16822136592
750W is too small for 2xGTX480 IMO, you should aim for 850w also you'll need a SLI mobo, not all the mobos accept SLI.
I wouldn't advise a future crossfire or sli on a HD 5970 or GTX480. Those cards are so powerful that by the time you'll need another one to play your games they will be obsolete (new directx, etc) so it won't be worth it.
Strictly for gaming, there is very little difference between the two CPUs, so unless you have access to a microcenter and can get an i7 930 for $200 the i5 760 might be the best option, price considered.
For only $5 more I would go with the ASUS P6T Deluxe v2 to get an extra slot between the two cards when you do go SLI, to help cooling the cards, or if you want USB3/Sata3 take a look at the Asus P6X58D boards.
The Samsung Spinpoint F3 is a very good HDD, but so is the Western Digital, for you usage they would be about equal.
If you are going with an i7 930 get a 3x2 GB kit as that is one of the advantages of the 900 series CPUs (the tripple channel memory controller), only get a 2x2 kit if you go with the i5 as the optimal memory configuration for that is dual channel.
Depending on the quality of the PSU and if you are overclocking (and how much) it might be, I would go with a 800W (at the very least!!!).