May Be Easier?
www.amazon.co.uk/iCAMView-Infrared-USB-Camera-CM-01d-01/dp/B001IUDQRA/ref=sr_1_2?ie=UTF8&s=electronics&qid=1260902558&sr=1-2

It's an IR camera ... :)
(Medical_Male Say aaaaaaaaaaaaaaaaaah, Tue 15 Dec 2009, 18:43, 2 replies)

Hmmm
I think being introduced to someone who then produced a IR camera would freak me out
(insomniac-surfer oh go on then, just this once, Wed 16 Dec 2009, 2:03, closed)

yeah, but it's near IR*
it will just give you a picture that looks like a funny coloured version of an ordinary camera, as it will only pick up IR frequencies near the visible spectrum.

You want far-IR to get proper heat tracking. The stuff that's heading down towards radio wave frequencies.

*I'm assuming this, based on the £18 price tag.
(Spidge New sig needed, donations gratefully accepted., Wed 16 Dec 2009, 12:02, closed)