Cor Blimey! What happened to the Christmas spirit from last week then?!

I have Windows XP and the message box I am getting reads:

The server www.forest-of-dean.net at My Private Directory requires a username and password.

Warning: This server is requesting that your username and password be sent in an insecure manner (basic authentication without a secure connection).

It then shows a log in box:

User name: (it gave me the options of e mail addresses used on my computer)
Password:

I am getting the Error Message: Error 401 Authentication required

Happy New Year
Chris