Add child entry to a specific node in xml file in vbscipt

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VBScript

I have an xml file DataConfiguration.xml with this entry

<OceanApplicationShell>
  <ApplicationShell>
    <Name>Petrel</Name>
    <Version>2012 (64-bit)</Version>
    <InstallPath>C:\Program Files\Schlumberger\Petrel 2012</InstallPath>
    <InstalledPlugins>
      <Plugin>
        <Name>PowerPoint creator</Name>
        <Description>Create PowerPoint presentations from Petrel's windows.</Description>
        <Contact>Support Portal: http://support.slb.com	Email: customercarecenter@slb.com	Support Line: +1  866 829 0234</Contact>
        <PluginTypeName>Slb.NAL.PowerPointUtility.PowerPointUtilityPlugin, Slb.NAL.PowerPointUtility, Version=2012.1.0.0, Culture=neutral, PublicKeyToken=c04a7e867bb7b019</PluginTypeName>
        <ImageResourceName>Slb.NAL.PowerPointUtility.Resources.PowerPoint_ms_3.ico</ImageResourceName>
        <PluginUri>http://www.support.slb.com/</PluginUri>
        <PluginId>://Slb.NAL.PowerPointUtility.PowerPointUtilityPlugin/2012.1.0.0</PluginId>
        <Trust PublicKeyToken="c04a7e867bb7b019">Schlumberger-NAL</Trust>
        <ReleaseDate>2012-08-23</ReleaseDate>
        <Author>Schlumberger</Author>
        <AppVersion>2012.1.236.1</AppVersion>
        <Modules>
          <Module TypeName="Slb.NAL.PowerPointUtility.PowerPointUtilityModule, Slb.NAL.PowerPointUtility, Version=2012.1.0.0, Culture=neutral, PublicKeyToken=c04a7e867bb7b019">
            <HintPath>c:\program files\schlumberger\petrel 2012\extensions\powerpoint creator_2012.1.0.0\slb.nal.powerpointutility.dll</HintPath>
          </Module>
        </Modules>
        <Assemblies>
          <Assembly Name="Slb.NAL.PowerPointUtility, Version=2012.1.0.0, Culture=neutral, PublicKeyToken=c04a7e867bb7b019">
            <CodeBase>file:///c:/program files/schlumberger/petrel 2012/extensions/powerpoint creator_2012.1.0.0/Slb.NAL.PowerPointUtility.dll</CodeBase>
          </Assembly>
        </Assemblies>
        <IsLegacy>False</IsLegacy>
        <CodeBase>C:\Program Files\Schlumberger\Petrel 2012\Extensions\PowerPoint creator_2012.1.0.0</CodeBase>
        <StartMode>Startup</StartMode>
        <StartupAction>None</StartupAction>
      </Plugin>

I need to add another entry to "InstalledPlugins" so it would be 

<OceanApplicationShell>
  <ApplicationShell>
    <Name>Petrel</Name>
    <Version>2012 (64-bit)</Version>
    <InstallPath>C:\Program Files\Schlumberger\Petrel 2012</InstallPath>
    <InstalledPlugins>
      <Plugin>
        <Name>PowerPoint creator</Name>
        <Description>Create PowerPoint presentations from Petrel's windows.</Description>
        <Contact>Support Portal: http://support.slb.com	Email: customercarecenter@slb.com	Support Line: +1  866 829 0234</Contact>
        <PluginTypeName>Slb.NAL.PowerPointUtility.PowerPointUtilityPlugin, Slb.NAL.PowerPointUtility, Version=2012.1.0.0, Culture=neutral, PublicKeyToken=c04a7e867bb7b019</PluginTypeName>
        <ImageResourceName>Slb.NAL.PowerPointUtility.Resources.PowerPoint_ms_3.ico</ImageResourceName>
        <PluginUri>http://www.support.slb.com/</PluginUri>
        <PluginId>://Slb.NAL.PowerPointUtility.PowerPointUtilityPlugin/2012.1.0.0</PluginId>
        <Trust PublicKeyToken="c04a7e867bb7b019">Schlumberger-NAL</Trust>
        <ReleaseDate>2012-08-23</ReleaseDate>
        <Author>Schlumberger</Author>
        <AppVersion>2012.1.236.1</AppVersion>
        <Modules>
          <Module TypeName="Slb.NAL.PowerPointUtility.PowerPointUtilityModule, Slb.NAL.PowerPointUtility, Version=2012.1.0.0, Culture=neutral, PublicKeyToken=c04a7e867bb7b019">
            <HintPath>c:\program files\schlumberger\petrel 2012\extensions\powerpoint creator_2012.1.0.0\slb.nal.powerpointutility.dll</HintPath>
          </Module>
        </Modules>
        <Assemblies>
          <Assembly Name="Slb.NAL.PowerPointUtility, Version=2012.1.0.0, Culture=neutral, PublicKeyToken=c04a7e867bb7b019">
            <CodeBase>file:///c:/program files/schlumberger/petrel 2012/extensions/powerpoint creator_2012.1.0.0/Slb.NAL.PowerPointUtility.dll</CodeBase>
          </Assembly>
        </Assemblies>
        <IsLegacy>False</IsLegacy>
        <CodeBase>C:\Program Files\Schlumberger\Petrel 2012\Extensions\PowerPoint creator_2012.1.0.0</CodeBase>
        <StartMode>Startup</StartMode>
        <StartupAction>None</StartupAction>
      </Plugin>




<plugin>

<Name>Words Creaor</Name>
        <Description>somethibng</Description>
        <Contact>Support Portal: http://support.slb.com	Email: customercarecente<pre lang="text"><pre lang="text">

r@slb.com Support Line: +1 866 829 0234
<plugintypename>Slb.NAL.PowerPointUtility.PowerPointUtilityPlugin, Slb.NAL.PowerPointUtility, Version=2012.1.0.0, Culture=neutral, PublicKeyToken=c04a7e867bb7b019
<ImageResourceName>Slb.NAL.PowerPointUtility.Resources.PowerPoint_ms_3.ico</ImageResourceName>
<pluginuri>http://www.support.slb.com/
<pluginid>://Slb.NAL.PowerPointUtility.PowerPointUtilityPlugin/2012.1.0.0
<trust publickeytoken="c04a7e867bb7b019">Schlumberger-NAL <releasedate>2012-08-23
<author>Schlumberger
<appversion>2012.1.236.1
<modules>
<module typename="Slb.NAL.PowerPointUtility.PowerPointUtilityModule, Slb.NAL.PowerPointUtility, Version=2012.1.0.0, Culture=neutral, PublicKeyToken=c04a7e867bb7b019">
<hintpath>c:\program files\schlumberger\petrel 2012\extensions\powerpoint creator_2012.1.0.0\slb.nal.powerpointutility.dll


<assemblies>
<assembly name="Slb.NAL.PowerPointUtility, Version=2012.1.0.0, Culture=neutral, PublicKeyToken=c04a7e867bb7b019">
<codebase>file:///c:/program files/schlumberger/petrel 2012/extensions/powerpoint creator_2012.1.0.0/Slb.NAL.PowerPointUtility.dll


<islegacy>False
<codebase>C:\Program Files\Schlumberger\Petrel 2012\Extensions\PowerPoint creator_2012.1.0.0
<startmode>Startup
<startupaction>None

How would I add this another plugin node in vbscript?I am new to vbscript please help me