A help on PII rig on this week [UK]? £600

I just got W7, so I'm looking for a good AMD/ATI rig. It must be this week.

APPROXIMATE PURCHASE DATE: This week.

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Gaming, browsering and maybe F@H.

PARTS NOT REQUIRED: W7, monitor, keyboard, mouse.

PREFERRED WEBSITE(S) FOR PARTS: Any UK website (perferably Aria.co.uk).

PARTS PREFERENCES: by brand or type AMD CPU and with HD 5870. If it's not enough for £600 budget then 5850 it is.

OVERCLOCKING: Yes / No / Maybe SLI OR CROSSFIRE: Yes / No / Maybe

MONITOR RESOLUTION: 3 of 1024x768. Using Eyefinity technology.

ADDITIONAL COMMENTS: 2 of monitors use VGA, one uses D-SUB. So, I need a adaptor for it.
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Thanks in advance