Samsung Eternity SGH-A867

I went to the MEdia Net icon - then to Favorites - entered the URL Address for my email server "mail.xxxx.com" and saved it. when you go back thru MEdia Net you'll find your favorite and when you press it you will be taken to you email URL. Then you have to type in your email address section before the @symbol and your PW.
What I would like to know is how can I enter in my address and password into the favorite URL field? What magic symbols do you uses? commas, dashes,slashes???