Thanks to all who responded. We've got working code (works on Microsoft OSs and Unices; not tested yet on Macs, but I should be getting an iBook soon out of curiousity). It should be available by the end of summer in a general molecular sequence analysis package (actually, long before then, but one never knows...). If you "really" need it, we can provide a preliminary version in the next few weeks. Thanks again! best, -tony -- A.J. Rossini Rsrch. Asst. Prof. of Biostatistics U. of Washington Biostatistics rossini@u.washington.edu FHCRC/SCHARP/HIV Vaccine Trials Net rossini@scharp.org -------------- http://software.biostat.washington.edu/ ---------------- FHCRC: M-W: 206-667-7025 (fax=4812)|Voicemail is pretty sketchy/use Email UW: Th: 206-543-1044 (fax=3286)|Change last 4 digits of phone to FAX (my friday location is usually completely unpredictable.)