No, it should not be based on an ActiveX control, but an independent *.exe file.
The setup is not that hard, we have done this here in another circumstance, and it's
very easy to administrate, both on the server and the client side.

The advantage would be the option to spread even small updates very easy,
all the same if its just a new wdl file fróm the templates or the new ackenx.dll .

old_bill