Pgsql as service in windows

Hi,
Am new to Pgsql and i want to start pgsql as service in windows..but manualy..
is it possible.?

I want to know is there any batch file available similar to TOMCAT 
which has service.bat..to start that manually as a service?

Am in a project, in which previously they used a Batch file to start postgresql as a service.
i dont know where they get that batch file..

please reply me asap.as this is urgent..

Thank u,

with regards,

Raja

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