Problem with a custom .adm file on Windows 2000 Server via GPO.

I am currently trying to use the GPO to force and explicit wallpaper down on my students.  I've written the .adm file (this is just the first version) I get an option for YWLCS Settings under Administrative Templates, but my the option for Mandatory Wallpaper doesn't show up in the view window, it's just empty.  Can I get soem insight into what IU am doing wrong?

CATEGORY !!categoryname
  KEYNAME "Control Panel\Desktop"
  POLICY !!torpedo
    PART !!labeltext CHECKBOX
      VALUENAME "WallpaperStyle"

categoryname="YWLCS Settings"
torpedo="Mandadory Wallpaper"
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Yes; this setting is outside the ...\policies\... keys, so it's not a group policy, but what MS calls in changing terms "preferred setting" or "branding".
Right-click the Administrative Templates hive, go to the View menu, and uncheck the "Show completely manageable policies only" (or similar, not using an English version). It will then show you your customized settings as well, this time in red instead of the blue for "real" policies.
Note that these settings will not simply "go away" if you delete the GPO or set the policy to "not configured"; it will remain at the last setting, like if you manually edited the registry.

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Windows 2000

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