Originally posted by David.
Your computer needs to be connected to a domain with Active Directory enabled. Once this is done either open up cmd and type in 'shutdown -i' or 'shutdown /i', hit browse and it should list the computers that are connected to the network - If you are connected to a large network DO NOT CLICK BROWSE. It will take forever, instead just get the name of the computer. Another way to do it is open up notepad and type in 'shutdown -i' or 'shutdown /i', save the file as .bat and it will open up the same dialog.
that seems right i think this guy covered everything thanking you post now