Ok. I understand now.I was referring to using the Win8 DVD to do an upgrade not a clean install.
I'm assuming that the DVD that's purchased from Staples will be the upgrade DVD and not a full instillation DVD. The upgrade should work fine to upgrade his Win7. I think... hope... well that's what I'm doing.
I will purchase a full edition of Enterprise and dual boot as I am now. I'd like to wait awhile until they get all the bugs worked out before using 8 as my main OS. Gun shy after Vista.