Vista - Why do i get tasks that i know nothing about??

Hi there. I have what sounds like a reasonably simple script but I cant
figure how to even start. I want to read the members of a group, for each
member I need to look at their location in Active Directory, if I find the
user has X location (or even just look for a country in the path) then they
go into group A. If the user has Y location then they go into group B. I
need to look for about 4 differnet paths and put each on into one of 4
differnet groups.

Please can anyone help.