Question: How can I prevent my users from accessing system properties with an Active Directory Group Policy Object...
Brad Dinerman's answer: There are various options to accomplish your goal. In Group Policy, you can set the option to prevent access to any control panel applet, which would include the system properties. You would do this within User Configuration > Administrative Templates > Control Panel, and then enable the option to Prohibit Access to the Control Panel.
If that option is too restrictive, however, you can set NTFS permissions just on the control panel applet (sysdm.cpl) by creating a GPO with settings at Computer Configuration > Windows Settings > Security Settings > File System. Right click on File System, select Add File, and then browse to c:windowssystem32sysdm.cpl. Set the permissions to deny read access for the desired users and then make certain that you apply the GPO to the appropriate OU.
Windows network rights management