If you do want an XP3200+ (and I'vegot no idea if it's comaptible or of real benefit to you) Overclockers have a special offer £64.95 VAT & p&p, which I suspect is quite good value. It's a one week deal only, and I suspect thats only a day or so to run so get in quick.
http://www.overclockers.co.uk/acatal...k_Only_25.html