If you just want to make your app work, and still tune some portion of the code, you could also do a mixed build by moving your performance-sensitive code into a set of files that you compile with the Intel Compiler, and let the rest of the app be built by the Microsoft compiler.  (In an Intel compiler project, individual c/cpp files can be multi-selected, right-click, go to Properties, General, Compiler and Environment Settings, select MS or Intel compiler.)