Take a look at this for a good overview of COM+ (it'll ovbiously wrap...):

http://visualbasic.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fmsdn.m
icrosoft.com%2Flibrary%2Fen-us%2Fdncomser%2Fhtml%2Fcomplus4vb.asp%3Fframe%3D
true

And here's a fairly good overview of DCOM:

http://www.microsoft.com/vfoxpro/sourcebook/whitepapers/dcomtech.htm

To quote from the second link:

"DCOM is an extension of the Component Object Model (COM). COM defines how
components and their clients interact. This interaction is defined such that
the client and the component can connect without the need of any
intermediary system component. The client calls methods in the component
without any overhead whatsoever."  [But COM makes no provision for
components and their clients being on different machines.]

"When client and component reside on different machines, DCOM simply
replaces the local Inter-process communication with a network protocol.
Neither the client nor the component are aware that the wire that connects
them has just become a little longer."

Hope this helps,

Pete

-----Original Message-----
From: Mark Roworth [mailto:mark.roworth@b...]
Sent: Tuesday, February 18, 2003 6:16 AM
To: professional vb
Subject: [pro_vb] DCOM, COM+


Hi group,

Could someone give me a brief overview (or point me to a website) with the
difference between DCOM and COM+? I've used DCOM, but found setting up
access priviledges difficult. I write software solely in VB6. Does VB6
produce COM+ components? Many thanks,

Mark Roworth
Dolphin Computing Ltd
01273 262865
mark.roworth@b...