Haven't tried this in Win 7 so not sure it will work. Here is how I did it when I dual booted with Vista and XP. As long as all the applications you are using are the same version this should work (not saying it will), install the application (e.g. MS Office 2007), into the same folder on the c: drive that MS Office is already installed. Now, first attempt to do this with a application that is not truly essential. Let us now how this works. Again try it with something that isn't all that important just in case it doesn't work.