Hierarchical Select Content Taxonomy

Dear Wim,

I am trying to let the user select their location (country, state, city) for their user profile, but have not yet gotten it to work. I am hoping you can point me in the right direction.

I created a "location" vocabulary with 4 levels:
- country
--- canada
--- usa
------ nevada
--------- las vegas
------ california
--------- los angeles
--------- eureka

I would like to display a sequence of dependent dropdowns in the user profile, for the user to select country state and city. Currently, a single dropdown appears with an indented list to represent the hierarchy. So that is one problem.

This single dropdown lists country and state, but not city, so that is the second problem.

Only one field (state) is getting saved to the user profile. I would like to save all 3 values -- city, state and country. So that is the third, and most critical, problem. (When I defined the vocabulary, I checked the box "save term lineage".)

Do you have any thoughts on what I might be doing wrong?

One piece of information that may be relevant:
I installed the "Content Taxonomy" module, no problem.
However, I could not enable the "Hierarchical Select Content Taxonomy" module. ("This version 6.x-3.x-dev is incompatible with drupal core").

Might this be why I am having difficulty?

Thanks very much for your help.
- Mindy