Boot from Static Image on HDD?

[Psionic Fungus]

I'm setting up a small network of computers for a public wifi spot, and would like to set it up so that every time a computer boots, it boots from a static image.

So any changes that are made to the system will be wiped out every time it is shut down.

Any saved files, installed programs, etc.

Will make it so that nobody can install a keylogger or trojan that'll persist throughout days/weeks/months, and will also protect the company for being responsible if something illegal is stored upon their systems. Make it easy for them to be set up, and then require no/little maintenance.

How would I go about doing this?

[H@L0_F00]

Steady State

DeepFreeze

You could also map it as a HDD, theoretically, with GRUB4DOS or Grub2.