Note: This is a folder extension and not a file extension. The folder name should be USMT2.UNC. The folder itself may be a compressed file but should show up as a folder in Windows Explorer.
You can use the "Files and Settings Transfer Wizard" in Windows XP to transfer settings for Microsoft Internet Explorer and for Microsoft Outlook Express. You can also use this wizard to transfer desktop settings, display settings, dial-up connections, and other types of settings. To get to the wizard in Windows XP: Start | Program Files | Accessories | System Tools | Files and Settings Transfer Wizard.