I have a new 8703e and cannot seem to download third-party software correctly. When I go to the download website I get an error message that says "HTTP Error 406:Not Acceptable The page you are trying to load is not supported by the browser. Please try loading a different page."

What am I doing wrong?

Sounds like your connected to a BES server and the IT policy is restricting you from installing 3rd party software. Probably nothing you can do about it.