"...e-mail for a new serial # to use Zbrush"....gulp! "Every single time you re-install Zbrush, for what ever reason, your going to have to e-mail for a new "security protection" serial #.".....Oh NO! "Zbrush using, " 100% " of your processor power continually while Zbrush is open"...Oh my gosh!..and dual means 200%! "...not to bust your bubbles"...no, its not busted yet, but it EXPLODED! Thanks for that "tad" of info Mark,I think I wait for "YBrush" to come around someday :)