If you decide to upgrade to Win 7 from XP or Vista, here are some options and what they will cost:
HOME PREMIUMUpgrade Price: $119.99Intended Use: This is the version most consumers will want. It has all the features of Vista Home Premium, including Windows Media Center.
PROFESSIONALUpgrade Price: $199.99Intended Use: Has all the features of Home Premium plus the ability to log in to a corporate Windows domain and to run programs in a special XP compatibility mode (requires compatible hardware).
ULTIMATEUpgrade Price: $219.99Intended Use: Has everything in Home Premium and Professional, plus disk encryption and the ability to switch languages.
*All are available in either 32- or 64-bit versions.