Add an entry to system path variable

This script will add an entry to system path variable. Save the next script as a .bat file. The script calls an .exe file that will do the job. You need to place modpath.exe into the same folder as the .bat file. Get modpath.exe from here: http://legroom.net/software/modpath (to download it, click on "ModPath AutoIt Binary")

 START modpath.exe /add "C:\Program Files\YourProgram\sys\exe\"
 EXIT
 

The /del parameter will remove the same directory if it already exists in the path

 START modpath.exe /del "C:\Program Files\YourProgram\sys\exe\"
 EXIT
 

Enjoy!