some time ago i builded an IR detector for control my pc with an ordinary remote control.. can´t believe i didn´t realize before.
http://members.chello.cz/cesko/girderplugin.htmim trying to use a little universal remote to build the IRpen an add two or three buttons for left click an something else

this is the IR detector

im using it with girder but i think OSS Lirc works too
rigth now im having some issues with the remote and im not really sure how to get constatant IR ligth from it.
the IR detector can read the RC code from the IR ligth and the wiimote would read the ligth position... im pretty sure some compatibility issues will come up :-S, but it should work after some headaches
please tell me what you tink
P.D.: I am really sorry for my poor english