Here a solution for right and middle mouse buttons:
http://maemo.vivaphp.net/dists/chino...0.10_armel.deb

Dependences:
http://maemo.vivaphp.net/dists/chino...0.14_armel.deb
http://maemo.vivaphp.net/dists/chino..._0.9_armel.deb

This have a /etc/keylaunchrc
Use MENU+click to RIGHT click
Use CHR+click to MIDDLE click

This was tested on:
1- MAEMO + Freeciv (game)
2- KDE 3.5.8 under MAEMO (booted from SD)
3- Debian (booted from SD)

This uses sources from OZ project and stay at 2.0.10 version
Howto here:
http://wiki.openzaurus.org/HowTos/Keylaunch

On debian:
- you need run xset -r 70 to disable MENU key repeat
- Change Multi_key to Meta_R on /etc/keylaunchrc file

on maemo
- you need run xset -r 135 to disable CHR key repeat

Now I need do a sh script to load keylaunch and a init script to put on init.d .... and put on my repo...

More info here: http://anunakin.blogspot.com !

Any help is welcome!! ;-)