I would like to use my new computer (Windows 7) with my iPhone 3G S. The iPhone was/is previously synced to my laptop. I simply wish to now use the desktop instead of my laptop. I have the .mp3's on both computers. Is it simplist to just use the registry hack to change the iTunes ID on my desktop to that of my laptop? Start anew, and if then will I lose all my contacts and such? Backup my iPhone to the laptop, copy the backup file to my desktop and the start anew (with the backup for restore) from the desktop? I know this has to be something simple. Apple can't possibly think that computers never fail, get replaced, or have blue whales fallign from the sky onto them.