I recently upgraded to 2012 so that I wouldn't have this problem (No IntelliSense for c++/cli in visual studio 2010?).
Sadly, my intellisense is still not working.
I tried everything listed here (Visual Studio 2012 - Intellisense sometimes disappearing / broken), but still no luck. I also uninstalled Visual Studio Express 2010.
I was hoping someone might now how to fix this.