Hello all. I currently have an iPhone 3GS that is linked to my iTunes account (under my name and credit card info). It is synced to my desktop PC. Soon, I want to get an iPhone 4 for my wife. She's a housewife and doesn't have a credit card, so will I be able to register her iPhone 4 to my iTunes account and have it bill my credit card when she makes any app purchases? Or is it more adviseable to create a new iTunes account for her? But if I do make a new iTunes account for her, will I also be able to set it so that it will bill my credit card for any app purchases? Secondly, will we have to sync both our iPhones to only one computer (my desktop) for the above to work or can we both use different computers? She has a laptop on which she can install iTunes on. Also, will I be able to transfer all the apps (especially the paid ones) from my 3GS to her iPhone 4? If yes, how do I do it? Will appreciate any feedback/help..thanks in advance!