Books

Programming Components with Microsoft Visual Basic 6.0
Works through COM and shows VB6's COM and DCOM development features. Covers developing ActiveX controls and Microsoft Transaction Server components to deliver functionality and scalability to applications. By Guy Eddon, Henry Eddon, Microsoft Press.
http://www.microsoft.com/mspress/books/2327.asp

Programming Distributed Applications with COM and Microsoft Visual Basic 6.0
Explains how to use the COM-based capabilities in Visual Basic 6.0 to create scalable distributed solutions with information and resources geared specifically to the Visual Basic development system. By Ted Pattison, Microsoft Press.
http://www.microsoft.com/mspress/books/2137.asp