Restrict laptop to internet

[aceofspades]

Hi guys,

I would really appreciate your help. I have been asked to find out how to set up a laptop designed to go into shop, so that users can ONLY use the internet. They cannot run programs, make / delete existing files or anything else that will cause problems. The laptop will be secured but people would still be able to reboot it so it must go straight into the internet when it reboots.

I dont know a whole lot about this kind of thing so I need your help! Can this be done with vista or do I need additional software? Also I understand that this might be able to be done under linux but my boss has only just brought a vista licence.

Regards,

James