How do I run a script each time I unlock my Windows 7 session?
So, if I lock my session and then log in again, I want the script to run.
Do login scripts configured in the Group Policy do this or will they only work the first time?
Scheduled Tasks is what you need. You can set a trigger for both workstation lock and workstation unlock. If you need to deploy it out to more machines, use SCHTASKS.EXE (provided with windows).
Hope that helps
Group Policy login scripts only process when you first logon. If you only reboot once a month and just keep locking/unlocking, login scripts will run once a month for you.