[Blitzen]

If i were you, with the budget you are working around, this is what i would go for:

Coolermaster Centurian 534 Silver Case - YOYO Code : 8652 - £36.85 inc. vat (Nice Choice)

Power Supply - I would shop around - The Corsair 520W isn't good value at £66.00 (sorry to be so honest but its true).

Abit IX38 QuadGT - YOYO Code : 17759 - £135.71 inc. vat - (Ok...its a little more expensive than the IP35-Pro but its also newer technology. For the sake of less than £20, why not go for the newer chipset? I did and im very very pleased with it).

Intel Core 2 Quad Q6600 G0 Stepping CPU - YOYO Code : 30481 - £157.64 inc. vat - (Once again, a little more expensive at around £20 more but this Quad will have a longer lifespan than the E8*** series CPUs. Regardless of of clock speeds, the E8***'s will die quickly under volt increases. Remember also that a Quad will still be useful when Dula Core CPU's have out lived their usefullness).

OCZ 4GB KIT 2x2048MB GOLD DDR2 800MHZ PC2-6400 Memory - YOYO Code : 50591 - £65.10 inc. vat - (Great memory, lifetime warranty and good value at that price. Vista enjoys 4gb btw)

Scythe Miné Quiet Heatpipe CPU Cooler - YOYO Code : 4996 - [COLOR="Red"]£23.87 inc. vat - (Great choice. Fanstastic cooling, extremely quiet even at full throttle and imho better priced than the Ninja for near on the same performance)

BFG 8800GTS OC 512MB - YOYO Code : 57499 - £201.01 inc. vat - Great Card. In fact, one of the fastest pre-clocked 8800GTS's out there)

Samsung 500GB HD501LJ Spinpoint T - YOYO Code : 4988 - £62.69 inc. vat - (All much the sameeness. Down to your preference really)

Microsoft Windows Vista Home Premium 64-Bit Edition DVD - £67.21 inc. vat

NEC Optiarc 20x Int DVDRW/RAM Black - YOYO Code : 37889 - £16.64 inc. vat - (Again...all much the sameness)

= £831.72 (i have added on £65.00 for a PSU...should be between 7-10% of full system value)

+Shipping!

Good Luck