Wiimote and it's yaw

[elpetto]

Hi guys!
I got a big problem, I worked out a Vizard script to get the acceleration data. That worked fine. Now I need the yaw data from the wiimote (my wiimote has motion plus). I know there is no such library/plugin command but there is still a way of addressing the motion sensor to get the yaw data, right? It just needs to be programmed manualy I think...
So my big question is, does anybody has some informations for me of how to get the yaw data?

By the way sorry for my english. I'm a foreigner..

Thanks!