Network password problem.

[Lacunabless2]

For some reason my main email address has stopped being downloaded by Outlook. My older one works fine. I am being prompted to enter my Network Password. I do this but it does not accept it. My emails are on the Virgin server still, so I have to go there. Meanwhile Virgin says its not their problem it's my Netgear Wireless Router WGR614 v7.This appears fine, buttons still flashing and web access still good. At their website forum I can't find any email problems like this. It's now been 3wks:about when I downgraded the Virgin TV package but kept same Broadband and phone. Could there be a connection?
I am flummoxed.