>I should be a little more specific.
>
>This is going to be part of my framework. The data
>module could be used in the load of the form, or from
>within other DLL's which run separate processes.
>
>By doing it with classes in a VCX, it gets compiled
>into the APP/EXE.
>
>If I create it as a DLL, its a free module that I can
>change without recompiling my entire APP

You can do the same with a VCX - simply mark it as excluded in the project at compilation time, and include the .VCX with the .APP or .EXE - then you can swap in a different .VCX at a later date.