3.5.6 Silent Install/Deployment

I am currently working at packaging Unity 3.5.6 for deployment to about 100 computers at our college campus. We are upgrading from version 3.3.0. We were able to script 3.3.0 to install silently without prompting for the license setup on run every time a student uses it, but have not been able to get this working yet with 3.5.6. Does anyone have any advice for this?

The Syntax you need is:
“C:\Program Files\Unity\Editor\Unity.exe” -quit -batchmode -serial SB-XXXX-XXXX-XXXX-XXXX-XXXX -username “JoeBloggs@example.com” -password “MyPassw0rd”
Unity - Manual: Command line arguments