As noted by Aaron Stebner, there is now a registry key you can search for to detect if the Visual C++ 2010 redistributable package is installed a machine, when installing your application.
There are 3 different (but very similar) registry keys for each of the 3 platform packages. Each key has a DWORD value called “Installed” with . . . → Read More: HOW TO: Detect if the Visual C++ 2010 redistributable package is installed with WiX
