Hi megaargon, have you resolved this issue?.. As i said previously the easiest way i found was to use the make leopard bootable cd. just burn it to dvd and boot system from it. it then boots into an installer were you can then partition or format drives then install, when finished restart insert your osx dvd and install. this has worked perfect for me (i couldnt get the other methods to work)..

Firewalk