It took me awhile but I finally solved my log-in problem. The issue was that when presented with the log-in screen I could not get the browser to send the user name & password. It turns out that you must have feature enabled. Under IE Tools, then Security, then Advanced and scroll down to Navigate sub-frames across different domains. This should be set to either Enable or Prompt. Problem solved. Also, I can't thank Dave S enough for the tip on using the shift key to open a new IE window. This has made browsing active topics a pleasure.