COM object used from .NET

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.NET

Hi,
I try solve my problem with using COM object in .NET application.
I have a main application. This application can use plugins. The one of plugins use COM object (C++) for some calculations. I need use this plugin without registration of COM object in OS.

Structure is like this

App.exe -> Plugin.dll -> Interop.COM.dll -> COM.dll

I tryed create manifest for this COM object and it works fine when I created App.exe.manifest and

COM.dll.manifest<br />

The main problem is that I can't modify Application manifest.
I want to create either Plugin.dll.manifest or Intero.COM.dll.Manifest for SxS.
But none of this above requirements works.

Know anybody any solution to solve this problem?

Thanks for help
Martin