[Ham-Computers] AT&T-Yahoo Trashing Firefox

[Paul Ahkolik]

Greeetings to the list,
   
  Ever since I installed the AT&T-Yahoo browser, I've been unable to open a Firefox browser most of the time.
   
  I've tried every trick I can think of, including uninstalling-reinstalling. Also when I click on an html link in whatever, (email, txt, doc, etc) a Yahoo browser window opens.
   
  I'd like to keep this particular browser if at all possible, so what steps can I take to get them to work without "fighting"?
   
   
  Paul W5PDA