All your folder paths may be different, these are only given as examples.
Registering and Unregistering COM Components
All COM components must be referenced in the registry before they will work, and it's also a good idea to unregister them if you go making changes in the design phase.
Being the lazy type, I made Quick Editor setting to do this for me. It takes the current file name, adds on either .dll or .ocx extensions, and registers or unregisters as you need be.