The icon you have in the top corner can also mean that you are trying to open a PDF file when you haven't got Acrobat Reader available within IE. Go back to the web page where you clicked on a link and try and download the contents of that link on to the Desk top. When you have done that, open the file on your desk top using Acrobat reader.
Your welcome susi67. I found that even though I had Java, macomedia flash and Apple quick time installed on my PC, there was still a program that would not open in a course I'm doing.
Same symptoms as yourself, a small window with the three icons top left corner. [Circle triangle and a square in different colour's]. I needed to download a plug-in to make the program run.
If your running 98se or XP, XP SP1 then you should have Java, if you have XP SP1a this comes without java and you will need to download the "Sun" version. Check your version of operating system if it's XP and download Sun Java if required. Also check for macromedia flash and Apple quick time. j.
I have never written to these sites before so I hope it comes out properley. I have the same problem with blank boxes that have 3 shapes in corner have downloaded Java and abode reader but still have empty boxes.Any ideas