Hi Wrna. Welcome to SitePoint.
I've never heard of Pvii, but I assume you mean this:
From the look of it, they provide add-ons for Dreamweaver. Add-ons like this can seem to make your life easier, but it's still better to code your CSS/JS etc. by hand, as automated programs like Dw and its plugins never write code as cleanly and reliably as you can yourself.