Starting and stopping SAP J2EE Engine

Hi guys,
I have downloaded and installed trial version of SAP Web Application Server (SAP Web AS) Java 6.40 for Microsoft Windows XP.
I wanted to launch SAP J2EE Engine and Software Deployment Manager (SDM) to run my web dynpro application. The Netweaver Developer studio getting started guide has a link for starting and stopping the SAP J2EE Engine but its not working for me. I get an error with the link.
Is it possible for someone to let me know how to launch J2EE engine and SDM. Also what server settings I need to make in the menu path Window -> Preferences -> SAP J2EE Engine.
Any help will be appreciated.
Thanks,
Mandar

Hi Ivaylo and Thomas,
    Thanks for your help, It works fine. For some reason after starting my J2EE server, when I start my Netweaver developer studio, it gives the following error
   JVM Terminated Exit code=1
   c:\j2sdk1.4.2_05\bin\javaw.exe
   -Xmx512m
   -Xms128m
   -XX:PermSize=128m
   DallUserDir='C:\Documents and Setting\All users\Application Data'
   -cp C:\Program Files\SAP\JDT\eclipse\SAPStartup.jar com.sap.ide.eclipse.startup.Main
   -os win32
   -ws win32
   -arch x86
   -feature com.sap.java.ide
   -showsplash C:\Program Files\SAP\JDT\eclipse\SAPIde.exe -showsplash 600
Any idea why I get this error and how to fix it. My Netweaver Developer studio did startup few times and I did write some code in it. But now when I try to start NDS, I get the above error.
Any help will be appreciated.
regards,
Mandar

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