I don't think you can upgrade from OS X 10.5x (Leopard) directly to 10.7x (Lion). I know that when it was first released had to have 10.6x (Snow Leopard) installed, even if it was on an external drive.
ugh... yeah i saw something like that when i was researching.... so u have to get all of them and install in order i guess...? ;-( so $30 just to get to the newer one for another $30..... i saw people had alot of problems with Lion..... i hope this doesnt mess up anything on my computer... ;(
Europe, Middle East and Africa