grant database access

Readers,

I have inherited a m$ pc with postgresql83 installed. Have tried to
create a new database using pgadminiii but received the error:

Access to database denied
The server doesn't grant access to the database: the server reports
FATAL: no pg_hba.conf entry for host "127.0.0.1", user "postgresr",
database "postgres", SSL off
To access a database on a PostgreSQL server, you first have to grant
primary access to the server for your client (Host Based
Authentication). PostgreSQL will check the pg_hba.conf file if a
pattern that matches your client address / username / database is
present and enabled before any SQL GRANT access control lists are
evaluated.

The pghbaconf file contains:

# TYPE DATABASE USER CIDR-ADDRESS METHOD

# IPv4 local connections:
local all all trust
# IPv6 local connections:
#host all all ::1/128 md5

Any advice please?