Just as Togoodhlth explained for the push method, some registrars (such as Bluehill.com) use a "pull" method. Just as free and easy but without the 7 day restriction.
Pulling a name
Pull - To move a domain name from one account to another within the same registrar.
Step 1 - Please visit "Registrarname.com" and set up a FREE account.
Once you have your account setup please send us a notice by email.
Step 2 - Once payment has been received we will unlock the name and send you the domain password/auth code. You then enter the domain in the transfer section along with the password. The name will then show up in your account. There is no fee for this service.