Vito,
You need to add the paths to the compiler include options of your project, even if you simply copied everything to the same project directory (a bit more thorough explanation is shown at this post).
Also, since you are creating a project from scratch, I think it may be very interesting to make your project truly portable. For that, take a look at the page below:
http://processors.wiki.ti.com/index.php/Portable_Projects
Hope this helps,
Rafael