Found this somewhere on the net and forgot to save the source website, so sorry to the author, however it's useful.
$strComputer = "computername"
$computer = [ADSI]("WinNT://" + $strComputer + ",computer")
$computer.name
$Users = $computer.psbase.children |where{$_.psbase.schemaclassname -eq "User"}
foreach ($member in $Users.psbase.syncroot)
{$member.name}
Protip
Turn it into a function or CL script by using creating a parameter based script:
param($strcomputer)
$computer = [ADSI]("WinNT://" + $strComputer + ",computer")
$computer.name
$Users = $computer.psbase.children |where{$_.psbase.schemaclassname -eq "User"}
foreach ($member in $Users.psbase.syncroot)
{$member.name}
:)
