Tech Support Guy offers free support for users of Microsoft Windows 95, 98, NT. Message posting boards for Technical support.

Microsoft: NT 4.0 technical support forums and mutual help system for computer professionals. Selling and recruiting forbidden.

Virtual Dr provides support for numerous operating systems, including Windows NT. Users leave questions, and their peers help to answer them.

Forums on Windows NT 4.0, Windows NT 5.0, SQL Server, Terminal Server, and Registry Secrets.