Hi, I got it. After reading much stuff, the NeHe Tutorial gave me the one hint I needed. Now it is clear to me that the whole thing is really intuitive. The first thought I have had from the beginning was the right one. In the selection mode (introduced by the getHitRecords) you have to perform all transformations you did by drawing the scene. My problem was that I called loadIdentity above my glupersepective and load a identity matrix into the projection stack. That cleared the pickMatrix stuff. In this case the RedBook is not really helpful for someone who never did those things before. One can come to the conclusion that all actions in selection rendermode must be performed on the projection stack. Nonetheless all my thanks goes to Sven who gave me some important hints with his links to the tutorials. Cheers Patrick