I've got a 4-year old macbook pro. I wanted to upgrade my iPhoto (which I have to do to import photos from BlackBerry). When I go to iPhoto in Apple and click upgrade, I'm told that I need OS X 10.6 or Snow Leopard. I've got 10.5.8. When I click upgrade, it tells me about Lion, for $29. When I try to upgrade to Lion, it tells me I need the Mac App Store. When I try to upgrade to add the Mac App Store, it tells me I need 10.6. When I try to get 10.6, I need the App Store. And around I go. Any help?