OSX 10.8 is the latest version of Operating System from Apple with over 200 new features, check ahead on how-to install it on your computer. Prerequisites : You don't need a snow leopard/Lion to install OSX Mountain Lion but you need one to prepare the Mountain Lion install USB hdd/thumb drive, which you can do on a Mac of your friend. You should follow all steps in preparing USB HDD for OSX Mountain Lion Install on a Mac running snow-leopard (or) Lion/Mountain Lion. If your friend does not allow you to do that, then follow step 1 else skip to step 2. 1. A working snow leopard install >= 10.6.6 (To install snow leopard follow this link ) 2. Buy and download 'Install OSX Mountain Lion app', from apple through Mac app store from this link . 3. intel >= core2 duo processor. 4. Discrete Graphics card - Nvidia Geforce 8 series and above (or) Integrated Graphics card - intel HD 3000 or above Note : i...