I followed the BMW CODING SUCCESS thread to get my stuff to work properly. just follow the DIY.PDF word for word and you should be fine.
http://www.e90post.com/forums/showthread.php?t=451145
I am also coding using a win. 7 x32 bit netbook. I could not get a windows xp VM to work with this.
as to OP's request, maybe the best thing to do is to just turn off the OC3 on the ABG module using NCSexpert. then clear any codes INPA gives you. My passenger occupancy seat sensor was screwed up with me, I turned this off & now i don't have air bags warning or seat belt warnings for my passengers. I believe the airs bags will go off in the case of an accident whether or not a passenger is there.