This may do although I have no idea how good the motherboard is, I picked it simply because it supports SLi although personally I think you'd be better with something like a Gigabyte DS3 or DS4 and just upgrading the graphics card as/when needed.
Corsair HX 520W ATX2.2 Modular SLI Compliant PSU (CMPSU-520HXUK) £74.99
(£88.11) £74.99
(£88.11)
Lian-Li PC-7 PLUS Silver Aluminium Midi-Tower Case (No PSU) £47.99
(£56.39) £47.99
(£56.39)
Seagate Barracuda 7200.10 250GB ST3250620AS SATA-II 16MB Cache - OEM £51.99
(£61.09) £51.99
(£61.09)
GeIL 2GB (2x1GB) PC6400C4 800MHz Ultra Low Latency DDR2 Dual Channel Kit (GX22GB6400UDC) £169.99
(£199.74) £169.99
(£199.74)
NEC AD7170A 18x18 DVD±RW Dual Layer ReWriter (Silver) - OEM £19.99
(£23.49) £19.99
(£23.49)
Arctic Cooling Freezer 7 Pro CPU Cooler (Socket 775) £14.99
(£17.61) £14.99
(£17.61)
Intel Core 2 DUO E6300 "LGA775 Allendale" 1.86GHz (1066FSB) - OEM £99.99
(£117.49) £99.99
(£117.49)
OcUK GeForce 7950 GT 512MB GDDR3 TV-Out/Dual DVI (PCI-Express) - Retail £154.99
(£182.11) £154.99
(£182.11)
Asus P5N32 SLi Deluxe nForce4 SLi X16 (Socket 775) PCI-Express Motherboard £120.95
(£142.12) £120.95
(£142.12)
Sub Total : £755.87
Shipping cost assumes delivery to UK Mainland with:
City Link Parcel Next Day (Delivered Mon-Fri)
(This can be changed during checkout) Shipping : £10.95
Vat : £134.19
Total : £901.01