Is there anything added to the registry or on the desktop of the client computer?

There is nothing about the Toolkit that needs to be referenced on the client machine, either in the registry or placed on a local drive. The client computer will need to have MS Access properly installed just as it would for running the application without a Toolkit applied to it.

Depending on how your application is rolled out to the end users, it is not uncommon that the developer will wish to add a shortcut on the users' computer, but this is not a requirement.