|AH!! If you have 64bit version of windows 7, you have TWO versions of Internet Explorer. One version is 32bit and is compatible with all websites, and the other one is 64bit and is not compatible with all web sites yet (they have to catch up still), especially related to video. If this is your case, use the 32bit one when you are going to visit those sites, or use Mozilla Firefox instead.|
Further, did you know that there are two versions of Flash player. two versions of Java, and two versions of Acrobat Reader and you will need both versions of each (one for 32bit, one for 64bit) if you plan on using both versions on internet explorer.