You can get it for ACS Classic from the ACS Geo Tables
package at
http://www.arsdigita.com/acs-repository/one-versio
n?version_id=1664.
But since you posted here you were probably looking for it in
Postgres form... AFAIK that doesn't exist. I haven't looked at it in
quite a while so I'm not sure how much porting it would require,
sorry.