Is there some way to map the actions in the "Drascula" game to the N800 hardware buttons?

Currently the mapping is:
Undo button -> quit game
Menu button -> close
Home button -> look (which is not so good as the home button also brings up the home menu)

The other actions are not acessible via hardware buttons, but only via the popup menu at the upper screen border, which is not so convenient to use, as it is apparently meant to be used with a mouse and not a stylus.

A better mapping would imo be something like:
Undo button -> quit game
Menu button -> inventory
Center button -> walk
Left button -> look
Right button -> take
Up button -> open
down button -> close
- button -> talk
+ button -> push