AD: GPO Disable Games in Windows XP

Open GPO Management, create a new GPO and go to:
Computer Configuration > Windows Settings > Security Settings > Software Restriction Policies
Rightclick "Additional Rules" and click on "New Path Rule..."

Now type in the following paths:
%SystemRoot%\system32\freecell.exe
%SystemRoot%\system32\mshearts.exe
%SystemRoot%\system32\sol.exe
%SystemRoot%\system32\spider.exe
%SystemRoot%\system32\winmine.exe
C:\Program Files\MSN Gaming Zone
C:\Program Files\Windows NT\Pinball\PINBALL.EXE