Have a 20" iMac which we bought a few months ago, which is great. Still have an older Dell desktop which came with Windows ME, subsequently upgraded to XP with SP2. I don't have a full version of XP o set up on the iMac, so am thinking of buying Vista so we can continue to use old Windows programs. Will Home Premium suffice? We have four family users set up on the iMac. Will the licensing restrictions on Vista sub-Ultimate affect our ability to use Vista through four desktop accounts? I think we should be able to make do with BootCamp, rather than parallels, so we wouldn't have multiple virtual machines. Thanks for any help.