You'll have to pardon my lack of familiarity with terms such as "native install" and "virtual machine"; I'm a noobie. My goal is to put some windows based programs on my Mac Book (no games, just things like Quicken/Quickbooks). After reading thru the forum, I've learned that I can use either Fusion, or, Parallels with Windows; I've opted for Fusion. Thus, back to the original question as to whether the install sequence makes a difference? Thanks.