It defaults to removing Office 2010 older versions of Office so be Microsoft Office 2010 sure to UNtick that if you want to keep them Microsoft Office on your HD. Also know that you can cancel Outlook 2010 the install of any or all of the "trial" Microsoft outlook 2010 programs if you don't want to try Microsoft outlook them, be sure to "x" out what you don't want before you hit "continue" It DOES give you the option Office 2010 key to install a 64bit version Office 2007 which is download Office 2010 a nice surprise since I never saw that in print anywhere when looking for info for my Vista 64bit system. Now I have Microsoft Office 2007 no idea what that means, but it kept me from using the 64bit install like I wanted to.