Launch Application from WebService

[lobillo]

Hi! Can I launch an exe from a WebService? I've tried with Shell and with the process class:

Shell(comando, AppWinStyle.NormalFocus)

and

Dim pro As New Process
pro.StartInfo.FileName = "C:\windows\calc.exe"
pro.Start()

The process "calc" exist in the Task Manager->process but nothing else. I cann't end the process (Access denied).
Any Idea?
Thanks