Hi, Sending links to a paper by s. Krufka and K. Barner from the University of Delaware given at ASSETS?05, October 9?12, 2005. The first link is to the paper and tne next is to movie Steven Kruftka giving his paper. link to paper http://delivery.acm.org/10.1145/1100000/1090816/p166-krufka.pdf?key1=1090816&key2=8152017511&coll=&dl=ACM&CFID=15151515&CFTOKEN=6184618 movie of presentation http://del2.acm.org/10.1145/1100000/1090816/p166-krufka.mov?key1=1090816&key2=8452017511&coll=&dl=ACM&CFID=15151515&CFTOKEN=6184618 Regards, Lisa Lisa Yayla Huseby Kompetansesenter Oslo Norway lisa.yayla@xxxxxxxxxx