Interop COM dll issue

[mgacourt]

Hi

I am trying to use a COM dll referenced from a vb.net project.
Everything works fine when I reference the interop inside the IDE but
when I publish the file in bin folder on my server I get:

Retrieving the COM class factory for component with CLSID {A440BD76-
CFE1-4D46-AB1F-15F238437A3D} failed due to the following error:
80040154.

Please note I can't register the original dll with regsvr as the
server is with a hosting provider and I thought the point of interops
was to be able to use old COM dlls without having to register them

Com file is a MS file, not ours.

Would be grateful for any hep as this is really blocking us.