Trusted Computing, Peer-To-Peer Distribution, and the Economics of Pirated Entertainment Rooster, that article reminded me of this paper. Interestingly, this was supported by Compaq, HP, IBM, Intel, and Microsoft. <A HREF="http://www.eecs.harvard.edu/~stuart/papers/eis03.pdf" target="_new">http://www.eecs.harvard.edu/~stuart/papers/eis03.pdf</A> Thanks for you DD. dude_danny