Hmm..Just couple of days ago I remapped my scandic layout(fin) to have arrows. Just read maemo wiki and read that file thought and everything was pretty self explanatory.

Let´s search for wiki entry.

.edit
http://wiki.maemo.org/Remapping_keyboard
here is something that also come up from allmightygoogle
http://blogs.igalia.com/berto/2009/1...00-arrow-keys/