Webcam works, but I dont know how to reasemble the lens.

Can anyone help me with a webcam problem thats not actually software related.

I have a Wise webcam with one of these lenses on it http://img.alibaba.com/photo/22539 [...] s.summ.jpg

I unscrewed it right off to clean the lens and all the insides came apart. And I can’t work out what parts go in first ect…

Apart from the Tube thingie it all goes in and the end ring you screw on the front of it, it has these components…

*small flat round glass thing (im sure this goes in first (closest to the back of the camera when the whole thing is screwed in)
*A small metal ring/washer that i think goes over that.
*a small lens
*a larger lens
*a small pipe sort of thing(seperator)
*a large separator
*the front lens

picture of them
http://s535.photobucket.com/albums [...] onents.jpg

I just don’t know how to put this thing back together again. Can anyone help me out with how to resemble this?