[Leica] technical question

[philippe.orlent at pandora.be (Philippe Orlent)]

Does anybody have experience with extreme close-up work?

I looking for a practical solution to shoot (non detachable) 0,2 by  
0,2 inch surfaces in such a way that they can be blown up to 40 by 40  
inch prints.
Meaning shot out of hand or on a simple tripot setting.
I guess that would include some kind of a flash system.

What kind of lens? Would a 200mm macro lens be sufficient?
What kind of flash system (ring or similar?)

I have no experience with macro, nor with this kind of flashes, so  
I'm a bit ignorant about this.

Thanks in advance,
Philippe