Are you sure everything is still working, because I have seen people messing with these licensing files and they were not able to use server OS specific things like Server Roles and -Features? However, I am still running the trial and will reset it when the 240 days are expired! An other possibility to get the full version of Windows Server 2008 is to get it via MSDN if you have an account, or via MSDN AA (Academic Alliance) if you are still studying and your school is connected to MSDN AA.
