Cheers for all the help, This is what I ordered in the end
Intel Core i7 920 D0 Stepping (SLBEJ) 2.66Ghz (Nehalem) (Socket LGA1366) - Retail
Sapphire ATI Radeon HD 4890 Vapor-X 1024MB GDDR5 PCI-Express Graphics Card
Patriot Viper 6GB (3x2GB) DDR3 PC3-12800 (1600MHz) Low Latency Tri-Channel (PVT36G1600LLK) + 3D Mark Vantage Benchmarking Software
OCZ StealthXStream 700w Silent SLI Ready Power Supply
Seagate Barracuda 7200.12 1TB SATA-II 32MB Cache - OEM (ST31000528AS)
Scythe Mugen 2 CPU Cooler (Socket 478/754/939/940/AM2/LGA775/LGA1366)
Antec 300 Three Hundred Black Case
ASUS P6T SE iX58 Socket 1366 8 Channel Audio ATX Motherboard
The build is for a friend. I know we could have waited for the new cards but he wanted the PC sooner than later.
Only thing I am still not 100% on is the tower but have seen some good reviews on the case, might just get him some tidy fans as a present
Looking forward to building my first i7