You can see a list of the computers on which you are synchronizing your account, as well as the status of your account on each computer. To see this information, on the File tab, click Info, click Manage Account, click Account Preferences, and then click the Account tab in the Preferences dialog box.
What do you want to do?
Renaming a computer
SharePoint Workspace lists the names of the computers on which you have your account. You can change the names listed for these computers. New names will display in this window for all computers that contain your account.
Select the computer and click Rename Computer....
Enter a new name and click OK.
Removing a computer with a synchronization alert
If a computer that contains your account displays a synchronization alert, this means that your workspace data on that computer is no longer being synchronized. In this case, the best course of action is to remove the computer, and then take steps for adding your account to another computer (if you still want to use your account on this computer).
To remove a computer, select it in the list and click Remove.
Resolving synchronization problems
If you add your account to multiple computers, SharePoint Workspace synchronizes your workspace data provided that you go online on all computers with reasonable frequency (at minimum, about once every three weeks). If you are offline on any one of the computers synchronizing your account for an excessive period of time, SharePoint Workspace stops synchronizing data for this computer, and posts a synchronization alert.
Do the following if you see a synchronization alert:
Delete the unsynchronized copy of the account from the computer where it resides.
Run the process for using an existing account on another computer to re-add the deleted account.