More than one Apple ID
I seem to have two Apple IDs. One was set up for iTunes purchases and another (earlier I think) in connection with AppleCare and other things like Mobile Me. Unfortunately some of my Apps seem to have been downloaded with the non iTunes Password and iTunes doesn't recognise them when I back up my iPhone. This causes me to loose the funtionality of these Apps and I have to delete and redownload them! Really I would like to have just one Apple ID for everything. Can I do this?