Getting an error in connection refused

Hi,



I'm trying to connect to databasewhich has been already created. But
when I use following command



psql -Utest1  -hlocalhost -p5432 -W testone



I'm getting  the following error



psql: could not connect to server: Connection refused

        Is the server running on host "localhost" and accepting

        TCP/IP connections on port 5432?



Can anybody please tell me how to solve this problem





Thanks and Regards





Shilpa