The Windows 7 update for Cisco NAC Agent won't run on my computer, even in compatibility mode. Any suggestions?

I am in college, and my school uses Cisco NAC Agent to allow students to access the internet.  Without logging on to this program, there is no way to access the internet at school.  I installed Windows 7 the day it came out, and I have not previously had any problems with NAC Agent.  Today, I was on the internet when it stopped working all of a sudden.  When I tried to open up the browser again, it went to a page telling me to launch Cisco NAC Agent 4.7.1.15, the new version that came out today.  It was supposed to fix compatibility issues with Windows 7.  I didn't have these problems, but I installed the new version because my school requires all software to be updated or the internet won't work.  The installation says it was completed successfully, but the program won't open at all.

To try to fix the problem, I uninstalled and reinstalled NAC Agent, and I've also tried to open the program in all the XP and Vista service pack combatibility modes, but none of them work.  They won't open the program at all.  Other people in my dorm have had this problem, but they are still operating on Vista.  Most people aren't having any problems with the internet at all.

Should I chalk this one up to my school sucks and they'll fix it, or what?  The internet is pretty important to a college student, and I can't live at my friend's house and use his internet for the rest of the semester...