We have this: Polycarbonate MacBook 4.1, Mac OS X 10.5.8 (Leopard), 2.4 GHz Intel Core 2 Duo, 2 GB 667 MHz DDR2 SDRAM We would like to upgrade from Leopard to something newer. According to the apple downloads page, we first have to upgrade to Snow Leopard (10.6.8 recommended) before we can put Lion on it. Lion is as far as this machine can go according to the site. I have looked on the apple store and can't find any product listings for Mac OS X. Am I looking in the wrong spot? Thanks in advance. Sorry if this is in a thread that I missed while searching.