My wife already has an iphone and we are upgrading this weekend. She has been having problems syncing her phone with itunes in that it just deletes everything on the phone. I really don't know if it is a library issue or what? Also or home computer is a XP but I have a Macbook Pro does it matter if I sync my phone at home on XP and on my laptop, I have been doing that for years with my ipod thanks.