you can list all local groups on your server using a simple task in operations manager
use the script below to create your task
On Error Resume Next
strComputer = "."Set objWMIService = GetObject("winmgmts:" _
& "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set colItems = objWMIService.ExecQuery _
("Select * from Win32_Group Where LocalAccount = True")
For Each objItem in colItems
Wscript.Echo "Name: " & objItem.Name
Wscript.Echo "Description: " & objItem.Description
Wscript.Echo "SID: " & objItem.SID
Wscript.Echo "-------------------Tarek-----------------------"
Next