Thermaltake Blue Orb Ii I Want Help For Buying A Computer?

I want help for buying a computer? - thermaltake blue orb ii

A little help from some of the options you want.
I want a computer for games, video (television), photos and internet, something that works, perennial and can improve in the future.
I have to connect devices to each other / tuner in the case (it is easy enough?)

Case Antec Nine Hundred BLK complete
AMD Athlon 64 X2 6000 + 2MB SKT-AM2 +
SKT-AM2 ASUS M2N-SLI DELUXE S / L 2000MT / s
GEIL 4GB DDR2-800 dual channel CL5.0 BLACK DRAGON RET
ASUS 512MB NVIDIA GeForce 8800GTS 2xDVI PCI-E SLI
W0116RB Thermaltake Toughpower 750W CABLE MANAGEMENT BLK RET
HDD SATA 500GB UDMA 300 7200 16MB
ASUS DVD ± RW 20x S-ATA DRW-2014L1T BLACK LightScribe (SATA)
Creative X-Fi Xtreme Music 7.1
10/100 Fast Ethernet LAN (Broadband Ready)
4 x USB 2.0
Internal Card Reader 50-in-1
Thermaltake Blue Orb II (CL-P0257)
MS Windows Vista Home Premium 64-bit --
Norton Internet Security 2008