Powershell Script to check Sessions across network

Hello Experts ,
I am looking for help with a Powershell script which lets me see all the users connected across the Network of servers. Please let me know if there is any such script which I can use or may be tweak a little bit.

Regards
Faiz

We need a simple report like

User ID, Session_ID , Local Client_Host_ID, Remote Server_ID_Connected to, brief_descp_Activity performed

Lots of stuff here, but none that have all that you specify in your report.