Take slow, deep breathes ... there, that's better. ;) My understanding is that the 'anti-piracy thingy' is similiar to the one that CL used for the original ProPack. After you've installed the software, you'd step through a little routine that generates a code sequence. Hit the CL site with the code sequence and you get another sequence back that you feed to the routine. The software is then unlocked and ready to go. That's the way it worked when I beta tested the ProPack anyway. The Poser4 and ProPack serial numbers are to verify that you've bought those products and are more for point-of-purchase rather then the install.