I touched on this in an earlier post, but once you have VNC out there on your machines, you could then use VNCed to simultaneously view all, or many, of the machines that it is installed on.
Download VNCed here.
Once downloaded just edit the ‘servers.list’ file to add in all your PC’s and then run ‘run.bat’
NAME:MACHINENAME:VNCPORT:P:VNCPASSWORD:true:4111
I had a quick play and it works very well. As I now have BGinfo running now, I just get the user to tell me that machine name and I go in that way, but this may work better in your environment.
As always, it’s free!