How to create NAS service in NAV 2009 R2

Copy the application server folder to the location where you want, in my case i keep it
    C:\Program Files (x86)\Microsoft Dynamics NAV\60

1) Start Command Prompt.

2) Move to the directory where NAS Intallation using CD, in my case its -
    C:\Program Files (x86)\Microsoft Dynamics NAV\60\Application Server\

3) Run Command nassql.exe
   nassql.exe appservername=INDEL-SXD6995N2-SQL, NETTYPE=TCP, servername=INDEL-SXD6995N2,database="Demo Database NAV (6-0)", company="CRONUS India Ltd.", nettype=tcp,startupparameter=”JOBQUEUE”, objectcache=40000, installasservice

Where
      appservername - is the name of service that has been installed by NAS Installer.
      Servername    - is the name of SQL Server where database Resides.
      database        - is the database name on the SQL Server.
      Company       - is the company name in the database where you want to run NAS.
      Startupparmerter - is the parameter for Startup (you can search for NAS in Codeunit 1, Function NASHandler).

*) Navigate to Services (By Clicking on RUN and services.msc).

*) As seen below we can see the two services for Native and SQL Client.

*) As shown these services are currently running with network services, please change the login to Default Domain account.

*) I will be using with SQL Database so i will use the service for SQL.

*) Don't try to run the service, as its not configured yet.