How to detect VC++ 2008 redistributable?

Question

Is there a Registry setting that I can look for to determine whether or not the Visual C++ redistributable is installed, whether standalone or as part of Visual Studio 2008?

Answer 1

Quick and dirty:

if (LoadLibrary(L"msvcrt80.dll")!=NULL)
{
  // it is installed
}

Loadlibrary will handle searching the paths for you.