think it might be best to build your own mate if you can. It not that hard really.

I built myn for bout £400, thats without the monitor. And ive got a pretty decent motherboard, AMD64 3500 +, 512mb ram, ATI Radeon graphics card and a mad looking case with an alien head on it, his eys light up up blue when i turn it on.lmao , Also bought 200 gig hd and a power supply.

prices for parts are getting cheaper by the day.