I was trying to watch a movie online and the window where the video should be says i need to download Xvid. When I clicked on it, it came up at the bottom of my screen telling me it was downloading. It went through the usual process things go through when I install them. Then it disappeared. I tried the video again and it just keeps installing Xvid. I've installed it like 4 times now and still nothing has changed. Why is this happening and why aren't the videos working? I also downloaded a pack off another website that says it contains lots of codecs. I thought it might have the one I needed but didn't. I also have divX on my computer. What can I do to get these videos working?