Unfortunately that's not a possibility, this particular school is a PRU, basically where all the little sh*ts go when they get booted out of school. The teachers range from completely illiterate in IT to moderate and I have been specifically asked for a button to disable particular computer's internet access.

They are soon to get ranger remote control but they want something seperate than that to disable it on a computer to computer basis. It's a pain but I kind of promised to have it sorted by Friday (I rarely promise anything, was a bad move this time)

But yeah, it's not a normal school by any standards and they need something definitive to control the kids so any ideas would be hugely appreciated.

Even knowing how to disable completely the address bar in win explorer would be something without being able to put it back in.