maximized

Hi I have a question I setup, using the universal module, and I want to set it up to where, depending on what checkmark option the customer chooses, it would add a product? For instance, we offer website development, and we setup the universal module to ask what domain name the client wants to use. We also ask if they own the domain, or if they want us to register it. If the client selects "we want you to register it" I would like the registration option to be add to their cart. I hope this make sense. Is this possible?