My work is under a firewall, and Macworld magazine said it probably won't work.
Chances are, the name box needs 'myname'.
The password box requires your password. The server box requires whatever your POP3 email provider set up as your pop3 server. Once you've filled in all those boxes, hit login. Then, it'll connect to your mail server, and in the upper-right frame, it'll show all the email you've got. Simply use your current POP3 email address' name and password.