Frankmza

Hi, im franco, from Mendoza Argentina, and i really love to play sim city... but now im bored, the cities were the same always.. I downloaded the NAM up-to-date, i pasted it in plugins folder, but when i play the game, i cannot create roundabouts, tunnels, train ways.. So, please, i need to know how can i do all these things!! Please, be patient, english it is not my native language.. Thanks!