Jim 0 Newbie Poster

For about 2 months now I am unable to display charts at www.fideility.com when I log on using AT&T worldnet and Internet Explorer. However if I log on using MSN and MSN 8 I can display the charts. The charts come up gray with a small square in the upper left hand corner. Oddly enough I can't chat with AT&T becuase the chat box comes up the same way.
I have "repaired" IE, checked all of the internet options to the best of my ability. This problem may have started when I downloaded AT&T's free Pop Up Stopper, but I am not sure. I have removed Pop Up Stopper. Any ideas at all? Thanks.