If you don't mind I would like to know why you left the [microscope] group. Send me mail at gcouger@couger.com We try to make sure that it meets the needs of users and if you have an interest or need that was not met or were offended by something or someone as a moderator I want know about it. Particularly if I was the cause:) Thanks Gordon Gordon Couger I collect links on information related to light microscopes. http://www.couger.com/microscope/links/gclinks.html Please forward anything you think might be useful to others. Microscope Documentation is at www.science-info.org