Hi all - nice enough day here in NE but still I'd like to get my 4 working. While I've been using my iPhone3 for years, I only recently took the plunge on the 4. I'd like to move all on the 3 to the 4 but I'm a bit slow on what syncs with what on iTunes. So I'm stalled. I recall that it takes the library from iTunes and puts it on the phone and, since I've got libraries on two different computers, one of which just ate its hard drive [a PC, of course!], I'm a bit nervous. Can someone spell out the sequence step by step so I don't lose items I want/need? Thanks much.