Remote monitoring

["WALI" <hkhasgiwale () gmail com>]

On my network of Windows XP platform and I need to arbitrarily monitor the 
activities of some of the workstations that are connected to Windows 2003 
domain. I have domain admin previleges to the network and am also aware of 
the local admin password. I understand that there are hundreds of spyware 
softwares assigned for this purpose but I was looking for a freeware, 
agentless deployment, monitoring thingy.

Anything of this sort out there?