Well if you can only install by way of updates why the tool in both 32/64bit flavors then except to custom install if not upgrade after the first initial upgrade takes place? The first attempts were to manually run the dvd and usb flash drive methods to see the initial upgrade take place which has failed miserably each time! OOPS! That reserved copy is delivered not by the MC but MS Updates! daaaaaa..... I'll get there some time for sure! Got to have some fun in the meantime however!
For those of you who already have 10 on you will want to stop by the Clean Install guide however to take notes on things there! That can save a few possible headaches later if you either plan or find you need to see a clean install.