Cannot connect remotely to postgresql

I have 8.2 installed on 64bit windows 7.  I have no problem making a local connection.  However, when I make changes to
pg_hba.confsuch as add: 

local all all trust

I still cannot connect through a VPN.  On a hunch that my pg server was not using the config files in "C:\Program Files
(x86)\PostgreSQL\8.3\data" I changed the port in postgresql.conf to 5433 and restarted the server.  After doing this I
amstill able to connect the server using "psql -h localhost -U postgres -d xxx"  I am assuming (perhaps incorrectly)
thatI shouldn't be able to do this.  So now I'm completely stumped.  I've searched my computer and can't find any other
conffiles.  I recently set $PGDATA to "C:\Program Files (x86)\PostgreSQL\8.3\data\" and the same in my $PATH for bin.
Ido notice that lib is not installed in my $PATH but assume that would not affect my connection.  Any ideas?