ok first download the client here
http://rapidshare.com/files/143211620/coedudescape_client.rar.html
(if you dont like it, i have modpacks to suite you taste, but for now download this one)
next extract it and run the "run" file.
now enter any user name/pass and log in. (use the same pass and user to login again)
AND TO-DA! U CAN PLAY COEUDESCAPE!@!@