This version of the program comes with Windows 7 Build 7127, and can be used on XP SP3, Vista SP1 or 2 and Windows 7.
Just run migwiz.exe and then you can back up files and settings and user accounts easily to transfter to another computer or back up for an update.
When you have selected save backup:
to get files back after an update to windows 7, just open the saved file backup and the program will run and restore files.
To get files back on windows vista, run migwiz.exe and follow the same procedure ad you did when you backed up the files, and click "this is my new computer" and follow from there.