New Domain Name - Same Server

I have built my cart on a temporary domain name. I am now ready to launch and will configure my live domain name to point to my cart. I have transferred my license to the new domain name. Now, what do I need to do on my cart? Do I only have to modify the config.php file with the new domain name or is there another place I have to do this? Where do I enter the new license code?

I sent in a ticket and they changed my CS license for me.