After installing Windows 7 I have had a problem. I can open sites such as yahoo, google, imdb, or any site that does not use a user id and password. However, when I try to open my online banking, or even my neighborhood homeowners site, or any site where I would need a user id and password to continue, I get an error that says the server cannot be found. Last night I spent 3 hours with MS Network support with no success. Any thought?