Pretty much all you'll need now is this:http://www.bestservice.de/detail1.asp/b ... th-werk/en
If you're concerned about not being authentic enough, pretty much everything KW themselves does now is virtual. WHile they're famous for analog synths, they've always been on the bleeding edge. They were big FM and sample guys for Electric Cafe.
What you will need, though, is a red button down shirt and a lot of hair gel.
(*Almost* did KW for the Dane101 Halloween thing last year. Did Depeche Mode instead, because my German is horrible)
Boing, boom, tschak.