Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal http://www.repairfaq.org/sam/laserfaq.htm#faqtoc Do we know about this site yet? If so, sorry to muddy the water. FCM Frederick C. Monson, PhD Center for Advanced Scientific Imaging Schmucker II Science Center West Chester University South Church Street and Rosedale West Chester, Pennsylvania, USA, 19383 Phone: 610-738-0437 FAX: 610-738-0437 [log in to unmask] CASI URL: http://darwin.wcupa.edu/casi/ WCUPA URL: http://www.wcupa.edu/ Visitors URL: http://www.wcupa.edu/_visitors/