Installation of pgAgent

Dear Sir,

I am having difficulty for Installation pgAgent, I have cron job scheduled but I would like to explore and use pgAgent features.
We have psotgres database on Linux Red Hat.
We are using pgadmin III for GUI interface to access database.
I have done following steps and research on internet for the pgAgent installation.
1) I have executed pgAgent.sql script.
2) Since Job scheduler is still not working so second step is register pgAgent service
3) Which is keep failing I tried different ways.
"C:\Program Files\pgAdmin III\1.8\pgAgent" INSTALL pgAgent -u postgres -p postgres hostaddr=10.0.12.108 dbname=postgres user=postgres

4) Keep giving error message: The account name is invalid or does not exist, or the password is invalid for the account name specified.
5) Then I download pgAgent for window pgAgent-3.0.0-win32.zip<http://ftp.postgresql.org/pub/pgadmin3/release/pgagent/pgAgent-3.0.0-win32.zip> from http://www.postgresql.org/ftp/pgadmin3/release/pgagent/
6) When I tried to install I get the error message

When I saw your support message on Tips I thought let me email you.

Please guide me what is missing here.

Thanks,
Jigna

____________________________________________________________________________________________________
Jigna Oza
Sr. Oracle Application DBA
DS Waters of America Inc. 5660 New Northside Drive Atlanta, GA. 30328
Desk:(770)937-7345 Cell:(678)637-8998 joza(at)water(dot)com<mailto:kcunningham(at)water(dot)com>

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