Hi all, My wife will be getting the iphone 4 soon and I just found out that the iphone 4 can't be used with my current Tiger 10.4.11. So now I have to upgrade my OSX to SL. As I said I have tiger 10.4.11 on my macbook, 2GHz inter core duo, 2GB memory. I am not very good at this but can I buy the $29 SL disk and do a fresh install. How easy or difficult is a fresh install. I am a noob and feel like I will screw something up. Should I go to a professional store and pay them to install the operating system for me. Its a refurbished macbook, so I don't have the Tiger OSX dvd incase something goes wrong to restore back to. Kindly help me........is there a step by step instruction on how to do this.