Just use the same one us N9 people are using, BUT the tricky part might be executing it to start. It might have an icon, but you might have to look into creating your own .desktop file in order to start the app after installing it. Install the .deb file on your N900 using the dpkg -i <filename> command. If somebody could post the .desktop file that we have for the N9 version it might help out our N900 friends