apologies and a heads up - I'm unsubscribing from the DAS mailing list today. The spam on it has gotten to be too much for my admittedly low tolerance level. If someone wants to reach me on a DAS issue (unlikely, but possible)... please email me directly. Sean -- Sean Eddy HHMI/Dept. of Genetics, Washington University, Saint Louis http://www.genetics.wustl.edu/eddy/