Is this ok to do this? I don't have to go 10.4 first? Will I lose anything from my current State (except the obvious) ? What is the best way to make a back up with the current system, I have en external hard drive, just wondered what program will best do it easily by a novice, at the moment I am more concerned about backing up my favorites, which I have lost before. Is there anything else I should know ? Thank you for you information.