When the Welcome screen is appears, the names that are displayed do not match any of the names of users' folders under the Documents and Settings folder or any of the names on the Users tab in Task Manager.
This behavior may occur if you have changed the name of the account in the User Accounts tool in Control Panel. By doing so, the new name appears on the Welcome screen, but the actual account name remains the same. The folders under the Documents and Settings folder and the names that are listed in Task Manager show the actual account name.
To resolve this behavior, if the display name for a user account has been changed, you can find out which account the new display name belongs to by logging on as that user, starting Task Manager, and then clicking the Users tab.
The user account that is marked as active is the one that is currently logged on. Also, you can find out which of the folders under Documents and Settings belongs to the currently logged-on user by right-clicking Start, and then clicking Explore. Windows Explorer will then start in the Start Menu folder of the currently logged-on user's folder.