Apparently Sapling caught a bunch of you by surprise. This is a one time "reprieve" -- I have reopened Sapling 10 and 11 until Friday of this week. -- Andrew J. Pounds, Ph.D. (pounds_aj at mercer.edu) Professor of Chemistry and Computer Science Mercer University, Macon, GA 31207 (478) 301-5627 http://faculty.mercer.edu/pounds_aj