This is a very important screen.  Type in your data as follows:

1.  "Your Name:"  Type your business name or the name that identifies this e-mail account
2.  "E-mail address:"  The e-mail address of the account you are setting up
3.  "User Name:"  The same as above (e-mail address)
4.  "Password:"  The password for this e-mail account
5.  Make sure "Remember password" IS CHECKED
6.  "Incoming mail server (POP3):"  Enter  (In other words, type "mail." followed by your complete domain name.  Example:
7.  "Outgoing mail server (SMTP):"  Enter
8.  Next, press the "More Settings ..." button