Knoppix to create Windows XP Image? DD or ntfsClone or what?

[Mel_3]

We are looking for a way to use a free Linux distro to create images of classroom PC's running Windows XP.

Someone suggested DD... Disk Duplicate command... I think

Someone else suggested ntsfClone

Does Knoppix come with ntsfClone or could it be put on the CD with Knoppix?

Any suggestions on how to do this would be very helpful as we are not Linux experts here.

Thanks.