Windows ME has a very small list of natively supported hardware. Some cameras don't have drivers for this OS.
With what's written in your post, I can't tell if you need camera drivers, MOTHERBOARD or USB DRIVERS or such?
http://www.usbman.com has much to write about USB issues.
Iam trying to add a ricoh RDC-7 camera, but windows can,t find it! WHY?