How to rate MP4 and FLV files with stars in Windows 7

Hi Running A Dell Inspirion laptop. OS is Win 7 Home Premium 64 bit. I have a number of MP4 video files and FLV video files. Some are in my videos folder. I want to rate the files using the 5 star system. When I click on the file it shows the title and duration at the bottom but no stars to rate the file. I have gone to sort by and more and added rating but that does not work. Can someone tell me how to rate the video files in Win 7? Any help would be greatly appreciated. Thanks in advance