I'll have a look around to see if I can get anything at that level at my price range

Would you say that my choice of PSU is over the top for my requirements?

I was wondering if this would be a good first time build on a budget? BTW I'm not planning on doing any overclocking.

Memory Corsair 2GB DDR2 XMS2 DHX PC2-6400C4DHX TwinX (2x1GB) £41.11

Motherboard Asus P5N-E SLi nForce 650 (Socket 775) PCI-Express DDR2 Motherboard£68.14

Hard Drive Seagate Barracuda 7200.10 500GB ATA-100 16MB Cache - OEM (ST3500630A) £66.96

Graphics Card OcUK GeForce 8800 GTS 320MB GDDR3 HDTV/Dual DVI (PCI-Express) - Retail£88.11

Processor Intel Core 2 Duo E6550 "LGA775 Conroe" 2.33GHz (1333FSB) - Retail£105.74

PSU Corsair HX 520W ATX2.2 Modular SLI Compliant PSU (CMPSU-520HXUK) £70.49

Disk Drive Samsung SH-S202NBEBN 20x DVD±RW IDE Dual Layer Lightscribe ReWriter (Black) - OEM £17.61

Case Lian-Li PC-7B PLUS II Aluminium Midi-Tower Case - Black £51.69

Total £509.85

(All parts from Overclockers UK)

I need to add Vista Home Premium 32-bit, keyboard & mouse, monitor and speakers (already selected)

Thanks for your assistance.