how do I authorize itunes to play content on a new computer under a new id when the old id keeps coming up
I recently changed to a new pc and a new internet service provider. The old equipment is gone and so is are the old ids. Now iTunes tells me I can't play music on my pc because it's not authorized under an even older id. When I ask for the password, naturally the msg is sent to the old id, which is defunct and not now available. So how do I get all this to work on the new pc and finally get rid of the old ids?
iPad, iOS 5.1