If i understand correct what you want to do, then no you can't use VDJ with cubase. BUT I do know that Deckadance (dj software) does have the possibility to use it as VST plugin inside a host such as Ableton. I guess it should be possible with Cubase as well. Deckadance and Ableton i know is definitely possible. And I guess you could then also use the VMS4's midi inside ableton as well.