Edit C:\Windows\PolicyDefinitions\AttachmentManager.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="attachmentmanager" namespace="Microsoft.Policies.AttachmentManager" />
    <using prefix="windows" namespace="Microsoft.Policies.Windows" />
  </policyNamespaces>
  <resources minRequiredRevision="1.0" />
  <categories>
    <category name="AM_AM" displayName="$(string.AM_AM)">
      <parentCategory ref="windows:WindowsComponents" />
    </category>
  </categories>
  <policies>
    <policy name="AM_CallIOfficeAntiVirus" class="User" displayName="$(string.AM_CallIOfficeAntiVirus)" explainText="$(string.AM_ExplainCallIOfficeAntiVirus)" key="Software\Microsoft\Windows\CurrentVersion\Policies\Attachments" valueName="ScanWithAntiVirus">
      <parentCategory ref="AM_AM" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <enabledValue>
        <decimal value="3" />
      </enabledValue>
      <disabledValue>
        <decimal value="1" />
      </disabledValue>
    </policy>
    <policy name="AM_EstimateFileHandlerRisk" class="User" displayName="$(string.AM_EstimateFileHandlerRisk)" explainText="$(string.AM_ExplainEstimateFileHandlerRisk)" presentation="$(presentation.AM_EstimateFileHandlerRisk)" key="Software\Microsoft\Windows\CurrentVersion\Policies\Attachments">
      <parentCategory ref="AM_AM" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <elements>
        <enum id="AM_TrustLogicSetting" valueName="UseTrustedHandlers">
          <item displayName="$(string.AM_HandlerBased)">
            <value>
              <decimal value="2" />
            </value>
          </item>
          <item displayName="$(string.AM_HandlerMostSecure)">
            <value>
              <decimal value="3" />
            </value>
          </item>
          <item displayName="$(string.AM_HandlerDisabled)">
            <value>
              <decimal value="1" />
            </value>
          </item>
        </enum>
      </elements>
    </policy>
    <policy name="AM_MarkZoneOnSavedAtttachments" class="User" displayName="$(string.AM_MarkZoneOnSavedAtttachments)" explainText="$(string.AM_ExplainMarkZoneOnSavedAtttachments)" key="Software\Microsoft\Windows\CurrentVersion\Policies\Attachments" valueName="SaveZoneInformation">
      <parentCategory ref="AM_AM" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="2" />
      </disabledValue>
    </policy>
    <policy name="AM_RemoveZoneInfo" class="User" displayName="$(string.AM_RemoveZoneInfo)" explainText="$(string.AM_ExplainRemoveZoneInfo)" key="Software\Microsoft\Windows\CurrentVersion\Policies\Attachments" valueName="HideZoneInfoOnProperties">
      <parentCategory ref="AM_AM" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>
    <policy name="AM_SetFileRiskLevel" class="User" displayName="$(string.AM_SetFileRiskLevel)" explainText="$(string.AM_ExplainSetFileRiskLevel)" presentation="$(presentation.AM_SetFileRiskLevel)" key="Software\Microsoft\Windows\CurrentVersion\Policies\Associations">
      <parentCategory ref="AM_AM" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <elements>
        <enum id="AM_RiskLevel" valueName="DefaultFileTypeRisk">
          <item displayName="$(string.AM_HighRisk)">
            <value>
              <decimal value="6150" />
            </value>
          </item>
          <item displayName="$(string.AM_ModRisk)">
            <value>
              <decimal value="6151" />
            </value>
          </item>
          <item displayName="$(string.AM_LowRisk)">
            <value>
              <decimal value="6152" />
            </value>
          </item>
        </enum>
      </elements>
    </policy>
    <policy name="AM_SetHighRiskInclusion" class="User" displayName="$(string.AM_SetHighRiskInclusion)" explainText="$(string.AM_ExplainSetHighRiskInclusion)" presentation="$(presentation.AM_SetHighRiskInclusion)" key="Software\Microsoft\Windows\CurrentVersion\Policies\Associations">
      <parentCategory ref="AM_AM" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <elements>
        <text id="AM_InstructHighRiskInclusionList" valueName="HighRiskFileTypes" required="true" />
      </elements>
    </policy>
    <policy name="AM_SetLowRiskInclusion" class="User" displayName="$(string.AM_SetLowRiskInclusion)" explainText="$(string.AM_ExplainSetLowRiskInclusion)" presentation="$(presentation.AM_SetLowRiskInclusion)" key="Software\Microsoft\Windows\CurrentVersion\Policies\Associations">
      <parentCategory ref="AM_AM" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <elements>
        <text id="AM_InstructLowRiskInclusionList" valueName="LowRiskFileTypes" required="true" />
      </elements>
    </policy>
    <policy name="AM_SetModRiskInclusion" class="User" displayName="$(string.AM_SetModRiskInclusion)" explainText="$(string.AM_ExplainSetModRiskInclusion)" presentation="$(presentation.AM_SetModRiskInclusion)" key="Software\Microsoft\Windows\CurrentVersion\Policies\Associations">
      <parentCategory ref="AM_AM" />
      <supportedOn ref="windows:SUPPORTED_WindowsXPSP2" />
      <elements>
        <text id="AM_InstructModRiskInclusionList" valueName="ModRiskFileTypes" required="true" />
      </elements>
    </policy>
  </policies>
</policyDefinitions>

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