Needed: Cluster analysis software

[Dave Jones]

I'd appreciate any information on where to obtain MS-DOS software that 
would allow me to perform a cluster analysis on some species abundance 
data.  I'm having particular difficulty finding software that would allow me to 
cluster using the Bray-Curtis method (aka Lance-and-Williams coefficient, 
Polar ordination, etc.).  It seems that SPSS has a non-metric version of the 
Bray-Curtis methods, however this only allows one to utilize 
presence/absence data vs.abundance data.  Any help on this matter would 
be highly welcomed!

Dave Jones
Univ. of Miami - RSMAS