For about a year and a half I've been synching my ipod touch to my powerbook g4. However, the powerbook is getting slow and I would like to sync it to my PC. I am worried that I will lose all of my apps and that I will have to arrange and download everything from scratch. I am also worried that I will have to pay again for some apps. What is the best way for me to start synching to my PC. Should I be doing some sort of a backup on the powerbook? Any advice would be very helpful. Thank you.