>How do you test a COM object in the development environment? I want to call methods and check the return values without putting it into service.
>
>Thanx,
>Charlie

With your DLL project already loaded, add a new standard EXE project in the same VB environement.
Add a reference to your DLL (VB create a temp entry in the registry)
Write some code to use your DLL.
Now, make sure that your EXE project is the startup project by right cliking on it in the project explorer window and select Startup Project (or something like that. I don't have VB in front of me right now).
Next press F5 and, voilà !
Set breakpoints and you can step from your EXE code to your DLL code.