I am syncing the new iphone, gave old to kid, need to know when the Q pops up as i register new to computer, do I want to add a new phone or continue with existing sync which i am confused about the latter.
If you want to restore all your old stuff to the new phone, continue with existing. Ideally, when you gave the old one to your "kid" he/she restored as new to put his/her own stuff on.
Otherwise, you have to start all over installing your apps, settings, etc.