Hmm, that's not good. Soleil said he has a French keyboard, so i don't know what the difference is between your N900s. There must be some European layout that has full arrow keys, right? If you discover one, please let me know so i can revise the instructions.

There is a way to set keys for the game, but the current control mapping uses up and down arrows to navigate to that menu. There's also the option of modifying the configuration file. If you want to do that, copy the default mapping to your own config file like this:
cp /opt/uqm/content/uqm.key ~/.uqm/flight.cfg
and then edit the ~/.uqm/flight.cfg file in a text editor

As i mentioned before in this thread, i'm willing to make alternative control configuration files available as a more satisfying fix for users, but that requires someone with one of the defective keyboards to share with me a working configuration.

The tilt control acts as a generic joystick, so it will be a working default when that version is ready for extras.