Now that you have your .co.cc domain, you want to get all big and bad and send emails from the same domain and do it for FREE, to do this you will need the ability to change your DNS entries, since I am hosting on my own server this was easy for me, and maybe for you too. You can also follow the entries from google setup to show how on other domain hosts too.
The first step is to go to https://www.google.com/a/cpanel/domain/new and pick the first tab, of course unless you want to register a new domain. Then you just follow the steps that google outlines fairly well and in no time you will be sending emails from and to anyuser@yourdomain.co.cc and the great thing is you get all of the power and stability of gmail in the process.
If you want to see how to use your .co.cc domain on a dynamic IP you can reference my other blog post… http://blog.hometownnerd.co.cc/?p=84
Hope that helps someone out there!