Due to lack of docs/tuts on smoke I've always come to http://www.pycs.net/lateral/weblog/2005/12/16.html#P319 as a reference. However this seems to be down now. Anybody knows if it is hosted elsewhere? Regards, -- Paulo Jorge Matos - pocm at soton.ac.uk http://www.personal.soton.ac.uk/pocm PhD Student @ ECS University of Southampton, UK