>>Possible, but not easy.
>>
>> Unless I am missing something. :(
>>
>>Mike's example is a simple demonstration. Imagine dropping a DLL into a folder and having it immediately incorporated into an already running application - adding it's own menu, toolbar etc on the fly. Delete it and the functionality is gone.
>
>Ah ok, you mean that the project was not compiled with the DLL, thus had no reference in it, and was able to deal with it at run time.

Exactly. Of course the main project needs to be written so it can be aware of transient (or permanent) additions.....