brittain1, I've sent you another email that should contain your registration information.
Also, for those who may not have received an email. Please visit http://support.stardock.com and enter your email address in the form on that page. It will email you your registration information.
And, if you do not not have it yet, get Stardock Central (https://www.stardock.com/sdnet_login.asp). Upon logging into to Stardock Central it should automatically recognize that you have a registration and you then can begin to download Sins.
There are many great features available to you once you register, including:
Sign in or Create Account