enabling vista administrator account using batch file

HI,

OS: Microsoft Vista SP1

Can anyone help me with this???? I am trying to find out how to create a .bat file to enable the hidden vista administrator account on workstations in my domain using the group policy in active directory.

This is what i have tried so far

%echo off
Net user administrator F13tch3r
net user administrator /active:yes

Is it possible to do this?????

Thanks inadvance

CIscocharlie