Sorry - what is 'bottom-posting'? I appreciate everyone's help.
The forum prefers bottom-posting, so if you could comply, we'd appreciate it.
-- Mark A. Beaumont, School of Animal and Microbial Sciences, University of Reading, Whiteknights, P.O. Box 228, Reading RG6 6AJ, UK
Tel 0118 378 7707 Fax 0118 931 0180 Email: m.a.beaumont@xxxxxxxxxxxxx WWW: http://www.rubic.rdg.ac.uk/~mab/
