We have 2 webservers and 1 dataserver, we also have 2 MTS dlls: UI and DATA. we places one copy of UI on each webservers and registered it w/ COM+. (so each webserver has its own copy).
then we placed DATA dll on dataserver and linked to it from each webserver's COM+ using something like: \\100.100.100.100\<the_path>\Data.dll
so there is only one copy of Data dll residing on dataserver but registered on both webservers, they share it.

please help.
shizo.