[Pkg-postgresql-public] doen't run

[Mohsen Pahlevanzadeh]

Dear all,
When i use dpkg -l "postgresql*" i see following output:
+++-=============================-=============================-==========================================================================
ii  postgresql                    8.3.7-1
object-relational SQL database (supported version)
un  postgresql-7.4                <none>                        (no
description available)
un  postgresql-8.0                <none>                        (no
description available)
ii  postgresql-8.3                8.3.7-1
object-relational SQL database, version 8.3 server
ii  postgresql-8.3-debversion     1.0.1-2                       Debian
version number type for PostgreSQL
ii  postgresql-client             8.3.7-1
front-end programs for PostgreSQL (supported version)
ii  postgresql-client-8.3         8.3.7-1
front-end programs for PostgreSQL 8.3
ii  postgresql-client-common      97                            manager
for multiple PostgreSQL client versions
ii  postgresql-common             97
PostgreSQL database-cluster manager
un  postgresql-contrib            <none>                        (no
description available)
ii  postgresql-contrib-8.3        8.3.7-1
additional facilities for PostgreSQL
un  postgresql-dev                <none>                        (no
description available)
un  postgresql-doc-8.3            <none>                        (no
description available)
ii  postgresql-filedump-8.3       8.3-1                         Utility
to format PostgreSQL files
ii  postgresql-server-dev-8.3     8.3.7-1
development files for PostgreSQL 8.3 server-side programming


When i use debian:/home/mohsen# /etc/init.d/postgresql-8.3 start
debian:/home/mohsen# 

I didn't see any output.
Then i run su postgres
& run psql & see following output:
psql: could not connect to server: No such file or directory
	Is the server running locally and accepting
	connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
////////////////////////////////////////////
What's my problem?Please help me.....

Yours,
Mohsen