Rob Brookes was looking for pop. gen. software for teaching.
An excellent set of educational proprams is provided by Mike Gilpin's
NEMESIS package. Unless he has moved recently you should be able to get it
from him at GILPIN at JEEVES.UCSD.EDU. I have used it in a pop.genetics
module for an M.Sc. course in Conservation Biology and it works very well
at that level.