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