I guess the easiest solution would be to change an app that you already have and point it towards your new script and icon.

If you never use the Help or Rhapsody or Skype app, yeah, just hack one of those desktop files instead.

This also updates the icons without a need of a full reboot.


root
gtk-update-icon-cache -f /usr/share/icons/hicolor


What does your script do by the way?