Hi Paul: The lecture notes for my May NTU class are in: http://www.ccs.neu.edu/research/demeter/tutorials/ntu-may98 ntu-may98.PDF ntu-may98-2.PDF ntu-reserve.PDF Do you have www access to print those files on paper or even better, can NTU or the students print them directly? The format is the widely used PDF format by Adobe. -- Karl