1. create brand new project in MVSC++
2. copy all your .h .cpp .hpp .c files form old project into directory of your newly created project
3. import your copied files from new project directory into new project.
(that means using right mouse button click on your project node> "sub folder"> add exiting files)
4. build the project
EDIT:
visual studio has build in project converter but I'm not shore if it would work for anything else then old MSVC projects