disable modify desktop

I would like to disable users on the local computer from changing the background or from modifying anything on the desktop.  How can I do this?  I ran gpedit.msc and I do not beleive I have all of the options available to me.  I am the administrator.  Below is a picture of what I have in my gpedit.msc

I am running windows XP.  
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Don S.Commented:
If this computer is a member of a domain, you should be using GPMC on the domain controller to create policies to do this.

you are correct - you are not getting all of the policy options.  You may be missing and/or have corrupted ADM template files.  Look for them in c:\windows\inf and c:\windows\system32\GroupPolicy\Adm.  system.adm is the main one and should be about 1705kb in size and have a file date of 12/30/2006
In the Open box, type "regedit" (without the quotation marks), and then click OK.

In Registry Editor, locate the following registry key:


This DWORD value 1 will stop people from being able to change their desktop wallpaper. A value of 0 will allow users to change the wallpaper.

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Rob HutchinsonDesktop SupportCommented:
Not sure about policies, but think they is a way to do what you are asking as the policies here at work have that feature enabled.

As an alternative, and somewhat more restrictive setup; you can use a product called Deepfreeze from Faronics:

This program is perfect for schools since the students can even try to delete everything, and it restored on reboot:
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ForLoop5Author Commented:
I have licenses for Clean Slate.  Same as deep freeze.  Its more of a hassle than anything.  
ForLoop5Author Commented:
Hmm.  There is a domain here at the school.  I do not have these computer on the domain though.  I have them local.   the original computer might have been binded to the domain at one time and perhaps had the policies applied.   Do you know of a way to restore the GPEDIT.msc options?
You can delete the Group Policy folder under C:\Windows\System32, and reboot. Actually just rename it to -OLD...

Should clear anything remaining.....
Actually, after that, replace the Group Policy folder from a working machine. Might just be missing all the ADM files....
Don S.Commented:
Copy known good .ADM files from a working XP computer and place them into the above noted directories.

Another option to look at if these are standalone is the free Microsoft Steady State tool.  It's pretty easy to use and will do what you want.
Thomas Zucker-ScharffSolution GuideCommented:
Steady State is an excellent tool, but it pretty much does the same thing as Cleanslate.
Right-click on Administrative Templates and select Add/Remove Templates.
If System isn't listed, hit Add and browse to WINDOWS\system32\GroupPolicy\Adm
Select system.adm and hit Open.

If system.adm isn't there, follow the previoius advice to copy it back from another machine.
For the desktop and wallpaper, you could also use mandatory profiles. They would be able to change them, but would reset at logoff/logon.
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