I checked in an Apple store this morning. My iMac of 3 years, it seems will allow me to install OSX Leopard. Previously i had reinstalled my OSX after i had let a load of rubbish build up & i wanted to start as new but i did use the option to keep previous system, so i was able to access it if required. My problem now is im not sure how to do this in a simple straightfoward way. The Apple guy says use my mobile me to have everything sync to the cloud BUT that wont keep my itunes library & all purchases i have made. Also what would happen to my previous system, would i still be able to access it or would it be cleaned off with this new operating system. Im doing all this so i can upgrade to ilfe but obviously will need leopard to do so. Any advise & pointers will be great thanks.