Windows Vista only: Vista’s Preview Pane can be helpful in determining exactly which file you’re looking to open, and PreviewConfig lets you extend its usefulness beyond the handful of files Vista automatically provides text or image previews for. The no-install utility provides a list of file types registered on your system, and you simply select the file and choose to add a text or multimedia preview. Multimedia previews generally work with any video or audio file that plays in Windows Media Player, or pictures that can load with a double-click. PreviewConfig is a free download for Windows Vista systems only. For a registry hack that accomplishes the same thing (with more effort), see the How-To Geek at the via link below.