G'day Boxy,
The original Toucam modification site is :
www.pmdo.com/SC1.htm
I have done the SC1 modification (long exposure) to my Toucam, but it is a finicky process, requiring patience, a magnifying glass of some sort and a very fine tipped soldering iron, as the circuit is all surface mount electronics. It is possible to do however, and the camera is very useful once modded.
There is a series if these modifications SC1,SC2...SC5, which involve more circuitry and replacing CCD etc if you want to take it further.
Regards,
David.