Hello Craig
There is a 60Gb drive on this site, but it is expensive, (Look under Hitachi) so I would stick with a 5400rpm drive, but make sure it has a 8Mb buffer.
http://www.lowestonweb.com/Products/DisplayInfoMain.asp?e=52878419-EB07-4EBA-9284-DD8D03D0A8E0 Hope this helps.
Bill
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English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).