Thursday has come and past again, anouther non day as far as i'm concerned.
Did find a nice setting for the network to remove most error messages the students see, such as access denied messages.
The registry setting is as follows:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Controlcreate key: error message instrument
create dword: EnableDefaultReply
give it a value of 00000001
This is simple and effective, and should save me a lot of hassel.
Also managed to sort out what was preventing the teachers and admin staff from burning CDs, as it turned out it was simply the denied access to the c: that was causing the problem.