Preferences not saved at logoff Dell PC

We have several Compaq and Gateway PCs on the NT network which work just fine; however, the “high-end” Dell will not “save” after logoff. The Microsoft Office bar appears in the same place from which it was moved the last time; the backgound color is the same as what was selected when the authorized user first logged on; and don’t waste your time creating desktop shortcuts, ’cause they won’t be there when you come back. WHERE in the administrative setup can this be corrected??? Thanks for any help