You might prefer the way one viewer displays a particular file format over another viewer or the way the tools work in one viewer better than another viewer. When attempting to display a document, PowerUser tries to use the first viewer in its list of available viewers for each file type. If the first viewer fails, it moves on to the next viewer in the list, and so on.
Before you begin You must be an administrator of the computer or User Account Control (UAC) disabled.
To change the order of the viewers in the list for a file format:
You should now see the document displayed with the chosen viewer in the viewer pane. This procedure applies to all file formats and all viewers.