The 9-year-old Microsoft genius

A colorful mural runs along the outside the Blaze Koneski public school in Macedonia, but it's been vandalized by graffiti artists who spray their tags all over the school.

There are metal bars on the windows and the building itself is run down and dilapidated. We are here to interview a "child prodigy" for CNN's i-List Macedonia.

Marco Calasan is the youngest Microsoft systems engineer in the world, holds four Microsoft certificates and has written a 312-page book on Microsoft's Windows 7. As we enter the classroom a young boy with a warm smile and dark, curly shoulder length hair pulled back in a ponytail, extends his hand and introduces himself.