Thanks to all the people who have offered help with this. I now have what I was looking for. Alastair. -- Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi