Probably the easiest way is to create an App Link to your script in the ~/.kde/Autostart directory.
1. Open Konqueror.
2. Change to the ~/.kde/Autostart directory.
3. Right click on any empty space.
4. Choose Create/Link to Application.
5. Give it a name.
6. Click the execute tab and type the full path to your script.
7. Check "Run in terminal".
8. Click OK.
That's it
Mike