try some of the others http://www.google.com/search?q=ip+locator

or build one yourself..

step one: download a DB: ftp://ftp.ripe.net/ripe/dbase/split/ripe.db.inetnum.gz (54 MB !!)
step two, select language (if you'd go with perl like most CGI designers do, get IP::Country http://search.cpan.org/search?query=...untry&mode=all )
step three bind the IP to the database..

there ya go..