First time exe is ran

[_pi]

you can do some wild calculation with values from SystemParametersInfo
and similar plus some encryption and then compile the exe to make
sure that the exe can only run on your system.

http://msdn2.microsoft.com/en-us/library...S.85).aspx

but for this you will have to learn more about these functions.
i don't have the time to write the scripts for you.

i have to learn c# ...