Cannot Access Remote Server

I have a remote server running postgresql (9.0.4). I have been able
to use the dbms via ssh and via phppgadmin.

Now I would like to use pgadminIII but I cannot get the server
connection. I am running the Ubuntu version og pgadmin (1.10.5).

I have this setting in my postgresql.conf:

listen_addresses = '*'

And these in my pg_hba.conf:

local all all md5
host all all 127.0.0.1/32 md5
host all all ::1/128 md5
host all admin xxx.xxx.xxx.xxx/32 md5
host all postgres xxx.xxx.xxx.xxx/32 md5

where xxx.xxx.xxx.xxx is the external IP of my home network.

I can ping my server fine.

I appreciate any ideas.

Best regards,

-Tom
Niceville, Florida, USA