Missing or erroneous pg_hba.conf file - ERROR: Could not SQL

I am new to this. Please let me know what other information you need.

I am trying to integrate Asterisk with postgresql. I was able to install postgresql with out any problem. I have installed postgresql: 8.1.4-1.1 and unixodbc. I have also created the user “asterisk” for ODBC to make the connection between Asterisk and Postgresql.

When I run
[asterisk@asterisk ~]$ echo “select 1” | isql -v asterisk-connector

I get the following error:
[28000][unixODBC]FATAL: missing or erroneous pg_hba.conf file

[ISQL]ERROR: Could not SQLConnect

See below for my pg_hba.conf info:

// /var/lib/pgsql/data/pg_hba.conf
host all asterisk md5
host all asterisk trust