User State Migration Tool
The User State Migration Tool (USMT) is a Microsoft command line utility program intended to allow advanced users, comfortable with Scripting languages, to transfer files and settings between PCs. This task is also performed by Windows Easy Transfer, recommended for general users. USMT supports the high-volume, automated deployment of files and settings from Microsoft Windows versions 2000, XP, Vista and Windows 7 and is useful in migrating user settings and files during OS upgrades. 32-bit to 64-bit migrations are supported, but 64-bit to 32-bit are not.