How to show Power Point PPS using Internet Explorer?

Hi,

I have a power point PPS presentation at my IIS server, and I let this file to download. I would like when someone download this presentation, it opens like a PPS presentation with animations, sounds etc... and not like PPT source file, at this moment the second options happens.

I searched over web and I found some links talking about this, and telling about the need to register in IIS PPS MIME extension, it has been done but even so the problem is still happening.

This problem just happens using Internet Explorer and with Office installed, using any other browser it will open fine.

Anyone knows a solution to this problem?

Thank you.

LINK WITH PROBLEM: http://www.ngo.com.br/docs/mensagem.pps

Solution : - 
it is sure you need to set Mime :
Value : - application/vnd.ms-powerpoint   And Extension - pps

Now , to open it with IE , Open windows explorer on your machine and click on Tools -> folder options  -> file Types -> Scroll it and locate PPS , You will see its mapped to Office package. You need to change it.
Select what you want "PPS" click on change , In New Window select IE. Click OK, OK and you are done. 
When you install MS Office on the operating system , binding of file types like .doc, .ppt, .pps, xsl, etc changes to default open with MS office. Now in your env. you have Office installed , so you need to change the binding and map it to IE. Wihtout doing so it will kept opening with MS Office.