Mac noob question
I have an old Powermac G5 with dual 1.8 (non intel) processors. The old Mighty Mouse is dying and I want to replace it with the new mouse that just came out. The problem is that the mac is still running 10.3 and the minimum OS requirement is 10.5. Obviously, I cannot run SL because SL require intel processors. Does apple still sell Leopard OS disks and can it be upgraded without doing a clean install ? (I'm assuming it does, just want to make sure)