Yeah, I found them on eBay too for around $20AUD including postage.
Thanks for the help Paul, I really do appreciate the offer, but think I'll just grab one of them...saves you the trouble too
PZ.
Edit #1: Sorry FOL, should have been more clear, I turned the variable resistor down in resistance = voltage up.
Edit #2: Just picked up 2x of these for $32.75 including combined postage:
http://cgi.ebay.com.au/ws/eBayISAPI....1#ht_653wt_962