albana 0 Newbie Poster

need some help with this, i'm new in WPF, im working in a address book application, i have implemented MVVM ,in the main window i have a list box and three text boxes, also i have and a button which one makes possible to add new items,now i want to add and one button which will save the new contact i will add...i'm trying to solve it but i do something wrong,can't get it :( ... please if someone could give me a direction ...
all the best