These are the ones I have used successfully too: Ebay Shop is "Virtual Information Systems" if the link breaks. Search their store on "2.5 3.5"
http://cgi.ebay.com/LAPTOP-HARD-DRIVE-A ... dZViewItem
The are US 99 cents on ebay, shipping about $5 to US, probably not too much more to Australia since they are in California. They shipped lightning fast in my case - 1 day to Boston, US.
They ship to Australia from their description, and the brackets are also handy so that you can make the drive fit to the EMU's 3.5" installation bracket.
And yes, since in 2.5" drives, power comes into the unit via the interface (not by a separate connector), most of these adapters that take the Molex socket for 5/12V power will route it to the 44 pin 2.5" IDE header.
Not bad for 99 cents, and the aussie $ is pretty strong right now, so not bad after conversion either.
M
's'allbollocksinnit.