I don't see that you have received an answer to your original question Marty; burning to several drives simultaneously. This is an issue I have taken up with Roxio since the exclusion of this module post Creator 7. Their reply to my query was, to effect, that they had no plan to reinstate the module!! Why?
So I retain my Creator 7 for this purpose. One major hitch, if you are upgrading to later versions the later installs will wipe your Creator 7 off the drive! The solution is to hide the 7 pre install.
Would like to see a users push to get the Simultaneous Burn module reinstated or as an optional plug-in.