First time builder + Core i7 rig. Can you help me?

Here's specs. All of them are from www.Aria.co.uk I trusted them after I brought 500Mb RAM DDR 200...

No other websites please.

... Here as we go.

Intel Core i7-920 Socket 1366 CPU D0 Stepping (SLBEJ) £241.44 inc. VAT

Asus P6T Deluxe V2 Intel X58 Socket 1366 Motherboard £229.83 inc. VAT

OCZ 6GB PC3-10666 DDR3 Platinum Low-Voltage Triple Channel (3x2GB) £72.39 inc. VAT

1TB Western Digital Caviar - Green Power - SATA2 - 8MB £80.44 inc. VAT

XFX Radeon HD4890 1GB PCI-E 2.0 + TOM CLANCY’s Free Game £206.94 inc. VAT

Nexus LOW-7000 Low Profile Fan (Socket LGA775, LGA1366) £40.19 inc. VAT
*I had to choose this*

Thermaltake TTM5 Midi Case £41.07 inc. VAT

HP dvd1060i 20x DVDRW/RAM Black SATA £22.94 inc. VAT

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Phew, I put efforts into this list. Is it any good? I couldn't find a PSU that suits to them. Find it please and it will be come from www.aria.co.uk please. OS is Windows 7. Which I will be buying if it comes out summer. Monitor, mouse, keyboard are from old computer and considered as temperary.
Total of cost items: 933.05. If you find any parts are good enough and cheaper, tell me please.

Thanks for any advance.

I wanted to overclock it to 3.0GHZ to match my old computer single core, so single core programs can run better.

^ you do realise that the i7 handles more instructions per clock than you single core, it handles about 4 IPC where as a P4 handles 1.5 IPC, so you'd need an 8ghz P4 to equal a 3ghz i7 in single threaded apps.

also try the akasa nero for a cooler, and use scan or overclockers.

edit: and what PSU are you using?

infact, don't bother with i7, you aren't giving yourself enough breathing space for luxuries and a nice PSU.

since you have a £950 budget you'd be looking at a 955 AM2+ build with a couple of XFX 4890's.

parts are so expensive in your country.

Excluding Coolers, Which PSU should I choose?

^ Oh really? last time I checked a £400/$600 build ex VAT, the £400 build from a UK supplier came out on top against the $600 build from newegg.

^ I tried, I made up a build before on a £450 budget and it came out to £448 which is just under $679, I then made a build as close to it as I could on newegg and it came out at about $722.

^ £900 should get you an i7 build with a 4870 X2 if you choose your parts right.

and one of those parts would be having a P6T SE mobo instead of a deluxe V2 since you don't need SLI.