CategoryBook "Designing Solutions With Com+ Technologies" by Ray Brown, Wade Baron, William D. Chadwick [ISBN: 0735611270] ----- Has some good ideas on how to use MicroSoft COM/DCOM technologies effectively. I've been doing some work based on their "object transmission framework" that persists objects to an XML stream for tranmission across the network. It needed some work. ''(OK, it needed '''a lot''' of work. ;-)'' But it's a good place to start. Stories at RefactoringWithComPlusTechnologies. -- JeffGrigg