Allowing WMI through the Windows Firewall of a Vista or Server 2008 computer

If you are monitoring a target in a workgroup, you need to disable remote User Account Control (UAC). This is not recommended, but it is necessary when monitoring a workgroup computer. Disabling remote user account control does not disable local user account control functionality.
Warning: The following procedure requires the modification or creation of a registry key. Changing the registry can have adverse effects on your computer and may result in an unbootable system. Consider backing up your registry before making these changes.
To disable remote UAC for a workgroup computer:
1. Log on to the computer you want to monitor with an administrator account.
2. Click Start > Accessories > Command Prompt.
3. Enter regedit.
4. Expand HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System.
5. Locate or create a DWORD entry named LocalAccountTokenFilterPolicy and provide a DWORD value of 1.
Note: To re-enable remote UAC, change this value to 0.