I accessed the setup page for my router, and made the changes you suggested.
As soon as I clicked apply/okay in my network adapter settings IE8 told me that I lost the internet connection, but the internet icon in the lower right of the taskbar never changed, it still told me that I had internet access.
All I did then was to close, and then re-start my browser, and I am now using those settings as I reply to your request.
Will try new settings.
But z, a tiny question...........
Can you iterate the advantages/disadvantages to this arraignment?