Please Don't Register Your Domain With Register.com
Domain Registration - Complaint
Register.com refused the authorization codes to transfer my domains with a form letter, much of which didn't even apply to my situation. These are active business domains. Clearly they do this habitually. Please don't register your domain with this company, you'll be relinquishing complete control of it. In addition, they force "auto-renewal" and charge you even without your authorization.
Also, they placed a large banner across my website. Not all companies do this, and not all registrars deny transfer. Keep shopping...