Enter Network Password

Can someone help me please? I been battling with this annoying problem for this past week. I already made sure that my password and username are correct. The mail servers, the port numbers are correct ,ssl checked. Whether i check the box,cancel or say no when ever the enter network password dialog box pops up it does not make any difference , it keeps on coming back, A link showing the error message that i get when i click on send and receive in outlook 2007 is posted below, Please help me Thank you

Basem Khawaja
http://www.pixentral.com/show.php?picture=1FCIzefehDfndBMSsKVXARMuYR7HYt