Login at GoDaddy then look at the navigation to the left My Account -> Domain Related -> Domain Transfers Now you will be in the Domain Manager. 1. hover the top left tab that is labeled "Domains" 2. choose "all my domains" from the submenu 3. activate the checkbox next to the domain you wish to edit 4. click on the "Account Change" icon in the menu above 5. follow the steps on screen
Here's a step by step video tutorial on How to transfer a domain name from one GoDaddy account to another GoDaddy account http://www.youtube.com/watch?v=Kap1-iXSUms . Good luck!