I changed it to an Amazon link, Fuzzface. The product's homepage is on a go-slow, as you said.
Yep; I plugged it into my PC and it works through the USB port. As you write on the tablet the words (or scrawling, in my case) appears on the screen.
I have Vista, so whether that makes a difference I don't know, but I just hooked it up to the USB and it worked straight away.