What web browser are you using and how/where is it "set at 'About Blank?'"
Please do a search for "Norton" and post the results back here. Click Start→Search→For Files or Folders. On the resulting menu, click on "All Files and Folders." In the block "All or part of the file name:" type "Norton" (without the quotes.)
I appears that, although you state that your dialup "came with basic Norton security," the program is no longer installed. The above procedure is to verify what may still be there.
Do you have any other antivirus, firewall, or antimalware installed?
Please do a search for "Norton" and post the results back here. Click Start→Search→For Files or Folders. On the resulting menu, click on "All Files and Folders." In the block "All or part of the file name:" type "Norton" (without the quotes.)
I appears that, although you state that your dialup "came with basic Norton security," the program is no longer installed. The above procedure is to verify what may still be there.
Do you have any other antivirus, firewall, or antimalware installed?