iMac600,
I am in Perth and have a few options for you:
1) Toshiba 400CS laptop (PI 75 MHz, 40 MB RAM, 800MB HDD, FDD, CD-ROM), you would probably want to run Win98 on it (maybe NT);
2) "Parts" of a PowerBook G3 333MHz - let me know what parts you need (I have no idea if they will be...