Once we process your order, an e-mail will be sent to the admin contact on the domain. You can do a WHOIS lookup on your domain to make sure you can get the e-mail. Some WHOIS sites:

http://resellers.tucows.com/whois or
http://www.networksolutions.com/en_US/whois/index.jhtml

You must be able to receive the e-mail that is sent or the transfer will be denied. If the Admin contact e-mail is inaccessible or just plain wrong, contact your Registrar directly and work with them to change the contact info.