Is there any particular reason why you don't just do it manually? I mean ... you could use something like WHMCS if you need the billing/support or you could simply write a simple script to use their API to create accounts as well.
Thanks for your reply. I dont want to do it manually because I have about 100 domains I want to create accounts for. I will look more into your suggestions. I contacted godaddy but didn't get much help from them so far.