PowerPoint file not displaying as slide show when accessed from hyperlink

Hello,

I was sent a .pps file to store on our server and create a link in order for a customer to click on the hyperlink and the PowerPoint presentation would display automatically in a Slide Show. It seems everything I have tried has not worked.

[URL] http://jpl.coj.net/presentations/confronting-the-future.pps [URL]

I've tried all the following extensions none of which work:
.ppsx, .xps, .odp, .ppt, .ppsm

When I click directly on the file, it displays beautifully in slide show mode; however, once I create a hyperlink to it, it does not.

Is there a solution to this problem. I'd appreciate any help you can give me.
Thank you, Elbee