1. Uninstall any codecs you have installed currently using Add/Remove Programs in Control Panel. These include codec packs you may have installed (Eg. K-Lite, Nimo) or any official DivX or Xvid codecs. This is a recommended step because codecs can conflict and cause problems with each other. 2. Download ffdshow and run the executable after it's downloaded. 3. Just go through the installer and leave the default options. 4. Reboot machine (not entirely necessary, but I say do it anyway) What ffdshow is, basically, a codec pack (audio/video compressor/decompressor pack) containing many different formats including XVid, DivX, AVI, mpeg etc. etc. GameEx is known to support this codec pack. Using the incorrect codecs may result in undesirable results. For example, if you have video previews that are in DivX format and you have the official DivX codec installed from DivX.com, when GameEx goes to play the video, GameEx will minimize leaving you with a blank screen. With ffdshow installed we can at least rule out one variable that may be causing video issues in GameEx. It's a good idea, and I have added links to download ffdshow in the GameEx Setup Wizard (and I'm not sure about licensing issues by having ffdshow included with GameEx - that's something for Tom to decide), but the problem is when people have DivX or XVid codecs or some other codec pack installed. I think I'll leave it for now and just provide a link and perhaps a brief explaination as to what ffdshow is.