title: VSTO project with multiple versions of office installed
body: <p>I currently have office 2010 installed, and am trying to assist a coworker who's still using 2007 with VSTO solution.  This is turning into a mess since my copy of visual studio thrashes the project files updating them to point to the O2010 dlls.  If I were to install office 2007 beside 2010 would I be able to open the solution without the upgrade wizard mangling everything, or are my only options making significant <a href="https://stackoverflow.com/questions/403338/c-sharp-visual-studio-how-to-have-mulitple-developers-on-a-solution-that-refere">architectural changes</a> to the solution or reverting to O2007 until my employer makes O2010 the new standard.</p>