You can get the stuff you need at any number of places.
Personally, I look at partsexpress.com or hometech.com first, but you might also be able to find them locally at Radio Shack, Home Depot, Lowe's or any other hardware/home improvement store.
It is fairly easy to put the connectors onto the cables, it just takes some practice to get the feel. Don't rush it either. A bad connection is a horrible thing, I know from experience.
Good luck, let us know how it turned out.