OE6 Logon window

Recently when I click to open my Outlook Express 6 e-mail I get a Logon window that says "Please enter your User Nmae and Password for the following server ". The server is Verizon, my ISP, and when I click "OK" the window pops up about 4 to 6 times before it finally downloads my e-mail. There is a check in the box to "Remember Password ". I haven't added any downloads lately to my hard drive and haven't fooled with my system settings. How do I get rid of the Logon pop up window? Thanks in advance.