I don't think it can be automatically "ON" only when docked. You might make a button (toggle) that keeps waking up the screen with a timer.
I am not on the computer with Pronto Edit right now but check to see if you can adjust the screen timer to always on .
The batteries could ware down much faster like this.
I believe it only runs on batteries when docked. There Is a wall mount that bypasses the batteries but the battery needs to be disconnected (for a permanent installation ).
Sorry I am not that familiar with the 9800.
If you could explain the need for the screen being always on in the dock there might be another solution for your problem.
Project Boredom 2 is here. [Link: mediafire.com] ------------------------ Check Version 1 & 2 out in the files section.