It may be impossible to get second-hand ones, but Apple still sells ones new
that are appropriate for G4 laptops, or you could try PBFixIt, which stocks
just about every component for Apple laptops that you can think of
http://www.pbfixit.com

Gordon

You can also get various sorts of adapters (car, plane, etc.) from DevDepot

<http://www.devdepot.com/powerbookdepot.html>

although you may need to buy a cloverleaf plug from Jaycar in order to use them with an Australian 240V plug.

Have fun,
Shay
--
=========================== Shay  Telfer ================================
 Perth, Western Australia   Technomancer  Join Team Sungroper in the
 Opinions for hire              [POQ]     2005 World Solar Challenge
 [EMAIL PROTECTED]         fnord     <http://sungroper.asn.au/>