Not sure why all the negative votes on your post here, because this absolutely works with Office 2010 on XP and 7. As for Slayer's comment, that is typical of taskbar item grouping, which really can only be effectively disabled with Windows XP. And also, I have *never* encountered the issue you described where you close one and all of the rest close. Here's how I do it, I open one document, and if I want another instance I just hit the Run from the start menu and type "excel" to open a new instance, separate window. Operator error?