I could and would easily build you a really good gaming system for that price, if that price was for a system with no monitor or kb or mouse or speakers then you would get a bloody good gaming system for that price.
If you need the above then you will still get something much better than Dell or PC World could sell you for £500 extra.
Avoid systems with anything less than a 9800+ or 4800 graphics card as that will be the thing that knocks the price up.
I normally charge friends/aquaintances £40-50 to build a system and install XP/Vista plus postage costs as I live in Somerset not locally to Swindon.
But...if you want an off the shelf system with a montiro then I would suggest
http://www.ebuyer.com/product/155476Processor
* Intel Core 2 Quad Q9300 Quad Core Processor (2.50Ghz, 6MB Cache)
Memory
* 4GB DDR2 800Mhz
* Memory Slot: 2 x DIMM
Hard Drive
* 1TB (1x1TB) SATA300 Hard Drive
Optical Drive
* 20 x Super multi DVDRW
Software
* Operating System: Microsoft Windows Vista Premium
Graphics
* nVIDIA® GeForce 9800GTX+ 512MB DDR3 Graphics Card
Input Devices
* Mouse and Keyboard (included)
Networking
* Interface: 10/100/1000 LAN, Realtek® RTL8111B
Power Supply
* 500W Power Supply Unit
Interfaces
* 1 set 5.1 channel Audio jacks (3 jacks)
* 1x PS/2 keyboard port
* 1x PS/2 mouse port
* 1x Parallel port
* 1x Serial port
* 6x USB 2.0 ports
* 1x RJ45 LAN port
* 2x DVI
Expansion
* 52in1 Flash Card Reader
£679 inc VAT
Then add £104 inc VAT for a Samsung 20" monitor
http://www.ebuyer.com/product/151436Thats £783 inc VAT and Delivery.
Obviously I could make a better system for less but including the cost of building and postage to you after the costs may be offset a little.
Or do as Magic says....build it yourself.....it takes me about 30 mins to knock a PC up together from parts and 2 hours to install and set up and optimise XP or Vista, so an amatuer could easily put one together inside of a day with little problems.
