My sister has a IPAD (64GB) and is using 3.2.2 and wants to upgrade to the new software 4.2.2. However, she does not have a MAC. I have a Mac Book Pro with me. She had it outfitted and set up at the MacStore in Tampa, Florida where she bought it, an hour away. She has gone to the Mac Web site and tried to find a way to download I-Tunes on her PC but so far has not successfully found a way to download or install the software. If I hook up her I-Pad to my Mac (I also have a I-Pad that I upgraded to 4.2.2 successfully), will I be able to install the software for her? Or will my MacBook confuse my I-Pad for hers? Is there something she can do here on her PC to help her upgrade easily and successfully or does she need to go back to the Mac Store to do this? Again, she does not have a Mac but a PC. Thanks!