Anyway, the camera is made by jincheng and seems to be the predecessor of the 640x480 USB model on this page: http://www.jcst.cn/en/p4.asp
Arrived today and it's working fine with a PC. but I'll also want Mac OS-X compatibility and the manufacturer doesn't offer drivers - none of these things have Mac drivers, with the exception of the REALLY expensive high-res ones that start around 500 quid. I'm hoping it'll just work when I plug it into the iBook tonight - I've downloaded the Macam webcam driver thing from Sourceforge - but if it doesn't, does anyone have any suggestions on ways of getting it to work? Needless to say I've emailed the manufacturer, but I somehow doubt they have anything.