Hello, I am new to the forum. Anyway, here is my problem. I recently just had to re-install windows vista on my hp pavilion. Thankfully I backed up all my music and re-imported everything from my old install to this one. However, when I go to sync my iPhone 4 I get the message that reads: "The iPhone is already synced with another iTunes library. Do you want to erase this iPhone and synch with this iTunes library?" It warns that doing so will erase my current iphone and replace the contents of it with the contents in my new iTunes library. I'm afraid to sync in fear of losing all my images and app data. I do not have the backup file from the old install but doubt that will work because there's a lot of stuff that's been re-arranged in my new install. I would like to think that it will create a backup first before it does anything but I'm afraid it will erase everything first instead including all my contacts. Also, I am signed in to my iTunes account. Help. Please and thank you.