So yes, I did write in another thread where I bought a new Seagate 7200 HDD for my HP laptop and my nvidia Macbook (two different drives, not one for both obviously), but they arrive tomorrow. Before I delve into them, wanted to see what exactly needed to be done? Neither my Mac or PC have much information on them and any pertinent info. I'll transfer to an external HDD. I know how to replace the HDD, but then what? Do I just plug the new HDD in and boot it up with the Leopard restore disc in (and the Vista restore disc in my HP) and it'll do the rest? I'd like to think it's that easy, but something tells me it won't be. Any ideas or suggestions would be most appreciated - many thanks!