does this only work in one direction or also bidirectional?
ie: can you control your pc with the n900 as well?

i have a program for my nintendo ds, where i see the desktop of my computer and i'm able to use the touchscreen just like a mouse.
that would be a nice thing to do with the n900 (given that the desktop refreshes in a relativily fast framerate. the ds-program refreshes the desktop on the ds every 2 seconds or so on the fastest setting)