Hi james, check out: http://evolution.genetics.washington.edu/phylip/software.html lots of stuff here including some windows software M Dr. Martin Leach Group Leader - Bioinformatics CuraGen Corporation Ph # (203)401-3330 ext. 376 Fax# (204)401-3351 "Why play with the genome when you can hack it!" (check out curatools.curagen.com - public sequence analysis server)