You may search http://search.microsoft.com/search.aspx?mkt=en-US&setlang=en-US for help with Microsoft products
You may also switch to VLC which is better http://www.videolan.org/vlc/index.html
You may search http://search.microsoft.com/search.aspx?mkt=en-US&setlang=en-US for help with Microsoft products
You may also switch to VLC which is better http://www.videolan.org/vlc/index.html