To execute an Au3 file when AutoIt3.exe is in the current path or the systems path use:
CODE
AutoIt3.exe "path/to/script.au3"
If not seen in the path, then you may need to also specify the "path\to\AutoIt3.exe".
If the Au3 file is compiled into an executable, then use same syntax as running any other executable.
CODE
"path\to\script.exe"
Switches used on the installer being automated, deleting shortcuts etc would be expected to be contained within the script itself.
AutoIt3 is
here if needed.
Scite4AutoIt3 editor is
here also if needed.