Windows Vista has a cool auto-preview that will allow you to preview select files in Windows Explorer by clicking the file once. All you have to do is click the "Organize" button, select "Layout," and "Preview Pane." Now when you click once on a picture or word document you will see it preview in the right side of the right side of Windows Explorer. Some files take longer to preview than others but it is a great start on Microsoft’s part. Once you click on a particular file and it opens, any other file types that are the same extension will open much faster. For example, if you click on a Word doc and it takes a few seconds to open, you find any other word files will preview very quickly.