After trying out Office 2010, Office 2010 I found that I really like it. Outlook 2010 I purchased Office for install Microsoft outlook 2010 on 3 computers Office 2010 key and it was easy to install on the laptop. Microsoft Office 2010 I just got online with Microsoft gave them Microsoft Office my product and in 8 minutes I was off and Microsoft outlook running. With trying to install on Office professional 2010 my XP system, that is a different story. I can't even install until I have the latest MSXML very installed for Office 2010 download which I cannot find the version they are looking for or any Office 2007 information on it. So I am disappointed that it is this much of a hassle to get software loaded onto an existing Microsoft system.