I have a MacBook Pro 15" late 2008, running OS X 10.6.8 It's all the same as when I brought it (not brand new) I have stayed on OS X 10.6.8 since Ive had it and never needed to upgrade, but I have just tried to install the latest version of some music software I own, and it requires OS X 10.7 or higher, this is the first time this has ever happened to me. What do I do, i have no idea how to update it.. Do I have to purchases the latest update, or? Theres is no update showing when I click 'software update' and there never has been.. Should there be? Or only on the appstore? What do I need to do, I just need 10.7 or higher, how do I go about this? Thank you.