[OFFTOPIC] Solution for school lab

[Peter]

Hi,

I am about to setup a small PC lab for teaching operating systems. Since
computers will need to be used for teaching
Windows/Unix(FreeBsd)/Linux(Novell) I need to find a way:

1. Systems to coexists on the same hardware
2. Easily restore system images to the initial state.


I do not want  we to turn into Windows only lab.I was thinking in for
some Citrix solutions but I wonder if there is other way we can
accomplish this task.

Thanks in advance.

Peter