Colorneg with B+W negs

I've been using colorneg for my colour negs with great success, thought I'd try it with B+W.
I've downloaded and installed the B+W extension but can't find any decent instructions telling me where to start.
The colorneg site has a good description but no step by step http://www.colorneg.com/sw.html?lang=en

Can someone tell me how to use it?

Thanks
Ed

That looks like a very digital way of doing things - try posting it over on www.hybridphoto.com please.

You'll have better luck over at our sister site, Hybrid Photo as this is off-topic for APUG.

http://www.hybridphoto.com/forums/home.php