I am possibly looking to sell now and rebuild with whatever money I get from my current PC, and Christmas... So here is my system...

P4 2.8Ghz w/ HT (478pin) - CoolerMaster Fan
Asus P4SD-VX Mobo
1024MB Samsung PC2700 RAM
120GB ATA100 7200rpm HDD (OEM)
Geforce fx5200 128mb (Dual Head)
Audigy 2 6.1
6 USB (4 rear, 2 front)
2 FireWire (1 rear, 1 front)
LAN (1/100)
Optical in
Sony 8x DVD-R/RW
Samsung 16x DVD-Rom
FDD
Sony Vaio Casing (as it is a slightly upgraded PCV-RS246)
300W PSU

Depending on how much extra people are willing to pay on top there is also (ie whether I can get more selling these bits seperately):

Sony HS53B 15" LCD TFT
Microsoft Elite Wireless Keyboard and Mouse
Creative Megaworks 250Ds

It is little over a year old, and all in all I have spent in excess of £1700