C:\Documents and Settings\myself>wmic path win32_groupuser where (groupcomponent="win32_group.name=\"administrators\",domain=\"%computername%\"")
GroupComponent                            PartComponent
win32_group.domain="XP191",name="administrators"  \\XP191\root\cimv2:Win32_UserAccount.Domain="XP191",Name="Administrator"
win32_group.domain="XP191",name="administrators"  \\XP191\root\cimv2:Win32_UserAccount.Domain="XP191",Name="sjones"    
win32_group.domain="XP191",name="administrators"  \\XP191\root\cimv2:Win32_UserAccount.Domain="XP191",Name="gsmith"       
win32_group.domain="XP191",name="administrators"  \\XP191\root\cimv2:Win32_Group.Domain="TEST",Name="Domain Admins"