All Windows programmers take advantage of features made possible by COM and DCOM, but they generally do so at arm's length through an intermediate programming technology such as ActiveX. Offering essential information for the Windows developer, this text shows how the underlying architecture operates and how to use them to create efficient and robust programs that execute more rapidly and are more stable. All the code developed in the book, tested and proven in the "Guerilla COM" training course, is included on the enclosed CD-ROM.