Hi frnds

i need to execute .pps/.ppt files from my asp.net application using C# as backend.

currently i m using this code.
Response.Redirect("C:\show.pps")
i m directly redirecting the file to Internet Explorer.
but there are two problems
1 it asks me for Open/Save.
2 if client machine does'nt have Powerpoint then its not showing the .pps/.ppt files.

is there any option which i can use. (using powerpoint ddl or else)

its urgent pls do help me