Unable to open .PPS attachments directly from Outlook Express

Solution:
Summary: After installing Windows XP Service Pack 2 (SP2) or Service Pack 3 (SP3), when you open a .PPS file that came as a mail attachment in Outlook Express, the following error may be displayed:

This file does not have a program associated with it for performing this action. Create an association in the Folder Options control panel. Whereas the same file may open fine when saved to disk and then viewed. Follow the steps to resolve the problem: Click Start, Run and type CONTROL FOLDERS In the Folder Options applet that opens, select the File Types tab. Scroll down and locate the following entry: Click Advanced. Click the New button. Type Open in the the Action: text box. In the Application used to perform action: field, type the following exactly: For PowerPoint Viewer 2003: 'C:Program FilesMicrosoft OfficePowerPoint Viewerpptview.exe' '%1' For PowerPoint Viewer 2007 'C:Program FilesMicrosoft OfficeOffice12pptview.exe' '%1' Uncheck the Use DDE box. Click OK twice. Close the Folder Options dialog. If the problem is seen for .PPT files, then make the above changes to the following file type: PPT (Microsoft PowerPoint Presentation)