Has anyone ever installed a USB pci upgrade card in a mac 9600 or older mac?

I'm looking at different digital video camcorders which of course all have USB ports. My Mac doesn't have one so I've been looking at buying a card made by sonnet.

Any help on this would be great

audiokid

So how does anybody feel about USB audio interfaces for either computer platform? What's working? What's lacking? I'd like to hear some personal experiences before I zero in on a product.