Registering an Active X control in the registry.

I would like to add a button to Internet Explorer's toolbar so that I'll be able to run any application on the system with the click of this button. I need to know how to register the activex control automatically in the registry of the client machine whenever a person browses my site.
I have created an Active X control and using Package and Deployment wizard the cab file is ready. Need to add this button to IE's toolbar. Can anyone help me ??

Thanks in advance.