I gave a quick overview of the transfer process in my post here:
http://www.digitalfaq.com/forum/web-...html#post22281
Read through that to understand what's going on.
You request the EPP from 1&1, through whatever control panel they have.
NJRoadfan gave you the correct link. Follow those instructions, and don't be afraid to contact 1&1 support if you need help (should something not work).
Outside of not waiting until the last minute (just before domain expiry), the most important two things about transfers is this:
(1) You'll get a lot of emails.
(2) You'll wait a lot -- a week or two in total. ...
also the reason to NOT wait until just before expiry.