Thought it would make a good addition to the project. Got it for 40 quid.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250706982783&ssPageName=STRK:MEWNX:IT
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250706982783&ssPageName=STRK:MEWNX:IT