In my application I'm using lame.exe and gs32.exe to convert audio respectively pdfs. On the simulator this works great, but on the SurfaceUnit, I have to verify that I really want to run this programm. This is really annoying, how can I avoid that?
The answer is:
Open "Internet Options" in IE:
It's under Security setting > Custom Level> "Launching Applications and Unsafe Files".
Check the "Enable" box and the prompts should disappear.
I think it is really weird that the Internet Explorer can do such things in the Operating System.