EXE File not executing through IIS7.5 using

Question

I have developed one web application using C# and I am calling one exe file in the web application.
Web application executing the exe file when I am running through Visual Studio 2010. When I am running the same application through IIS 7.5 it is not executing the exe file. But with IIS6 it is executing. What should I do for resolving this issue?
The code I used is given below:

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System.Diagnostics.Process proc = new System.Diagnostics.Process();
proc.StartInfo.FileName = Request.MapPath("ACRKIOSK.exe");
proc.Start();

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