Edit C:\Windows\PolicyDefinitions\EventViewer.admx

??<?xml version="1.0" encoding="utf-8"?>

<policyDefinitions xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" revision="1.0" schemaVersion="1.0" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
  <policyNamespaces>
    <target prefix="eventviewer" namespace="Microsoft.Policies.EventViewer" />
    <using prefix="windows" namespace="Microsoft.Policies.Windows" />
  </policyNamespaces>
  <resources minRequiredRevision="1.0" />
  <categories>
    <category name="EventViewer" displayName="$(string.EventViewer)">
      <parentCategory ref="windows:WindowsComponents" />
    </category>
  </categories>
  <policies>
    <policy name="EventViewer_RedirectionProgram" class="Machine" displayName="$(string.EventViewer_RedirectionProgram)" explainText="$(string.EventViewer_RedirectionProgram_Help)" presentation="$(presentation.EventViewer_RedirectionProgram)" key="Software\Policies\Microsoft\EventViewer">
      <parentCategory ref="EventViewer" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <elements>
        <text id="EventViewer_RedirectionProgram" valueName="MicrosoftRedirectionProgram" expandable="true" />
      </elements>
    </policy>
    <policy name="EventViewer_RedirectionProgramCommandLineParameters" class="Machine" displayName="$(string.EventViewer_RedirectionProgramCommandLineParameters)" explainText="$(string.EventViewer_RedirectionProgramCommandLineParameters_Help)" presentation="$(presentation.EventViewer_RedirectionProgramCommandLineParameters)" key="Software\Policies\Microsoft\EventViewer">
      <parentCategory ref="EventViewer" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <elements>
        <text id="EventViewer_RedirectionProgramCommandLineParameters" valueName="MicrosoftRedirectionProgramCommandLineParameters" />
      </elements>
    </policy>
    <policy name="EventViewer_RedirectionURL" class="Machine" displayName="$(string.EventViewer_RedirectionURL)" explainText="$(string.EventViewer_RedirectionURL_Help)" presentation="$(presentation.EventViewer_RedirectionURL)" key="Software\Policies\Microsoft\EventViewer">
      <parentCategory ref="EventViewer" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <elements>
        <text id="EventViewer_RedirectionURL" valueName="MicrosoftRedirectionURL" />
      </elements>
    </policy>
  </policies>
</policyDefinitions>

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