Can't View Video When Using Internet Explorer as my Browser

[ginky4]

Discovery.com has some videos that you can watch of the top 10 roller coasters in the world. They take you for a virtual ride on the top 10. If I am using Internet Explorer as my browser I can't watch the videos. When I click onto the play button I get an "Unable to display page." Now , if I use AOL as my browser and go to the same page and click play to watch the video, Windows Media Player pops right up and the video begins to play. Why can I view the videos with AOL as my browser and not Internet Explorer. Is there some preference of setting in Internet Explorer that I need to set? If you want to try it for yourself go to www.discovery.com and search under Roller Coaster. Click on to the roller coaster link , it should be the first link that pops up. Hit the play button on any of the ten and take a virtual ride. Any ideas why IE won't play the videos? Let me know.