My sister has a 2008 MacBook currently running Leopard. She just got an iPhone 4S and was looking into using iCloud, but can't because she's on Leopard. In order to upgrade to Lion she'd have to upgrade to Snow Leopard first right? This would cost $60, correct? Does Lion run well on 2008 MacBooks? Would she be better off just upgrading to Snow Leopard? And what about Mountain Lion? Using speculation, would she still have to upgrade in order (Snow Leopard to Lion to Mountain Lion)? Thanks for any help.