Licensing Questions

I have some questions about the licensing of Inventor. I recently installed last year's copy (Inventor 8) on several of our school's PC's. Currently they are running in the 30-day trial mode. We don't have a server running, and our IT administrator isn't comfortable running a license server just for this application.

I'm wondering what our options are for getting the software correctly licensed. Is there any way to get several individual licenses instead of using a network license server? I tried installing that way, but the software says it's network licensed only. Could I maybe install the license server on my laptop, connect to the network long enough to borrow a license on each PC, and then disconnect? Who can help me out with this? I tried sending these questions to autodesk, but they said I should contact my reseller with those questions.