Including operating system it comes in at under £1200. There are plenty of other deals around. Will post back more later.
Really the point of this post is to say that for your budget you really want to look at a Core i7, triple channel DDR3 based PC.
Also, if you are a gamer Vista really is the better option for you. Xp doesn't support DX10 so you'll never get best game play out of an XP based system. Vista 64 bit version would be far better still.
X-CLIO WINDTUNNEL EXTREME Case with Twin 25CM Fans 720W 80+ DUAL 12v V2.2 PSU Gigabyte EX58-UD3R i7 SKT1366 Motherboard Intel Core i7 920 2.66GHz Processor 4.8 GT/s 8 MB L3 Cache 45 nm 3Gb DDR3 10666MHz Triple Channel RAM (3 X 1Gb) 1Tb (1000Gb) SATA2 Hard Drive Blu-Ray and HD DVD-Rom Drive 22X DVD-RW Dual Layer nVidia GTS250 1Gb DDR3 CUDA SLi Zalman Cooled Graphics Card Integrated 8 Channel High Definition Audio Integrated 10/100/1000 LAN Up To 12 x USB 2.0 Ports Front USB & Audio Ports Firewire Port Genuine Windows Software License and Media Included AVG Anti-Virus (Supplied with OS) Multi Card Reader/Writer
With operating system comes to £982. If you call them and ask them to up the RAM to 6GB you should still have plenty left for a 22" monitor.
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