If you dial in to your NT system's Remote Access Service, one of the first things you'll see after connecting is a dialogue box asking if you want Windows NT to call you back. To defray the costs of calling from a hotel room, just initiate the connection and enter your hotel room's area code and phone number when prompted. NT's Remote Access Service will disconnect briefly, then call you back. The only caveat: your hotel needs to support dialling in to guest rooms, bypassing an operator.