Alternatives to lat pulldown machine?

I've got kind of a newbie question, but I'm hoping someone here can give me some ideas.

The lat pulldown machine at the fitness suite I use has broken. It's unlikely to be repaired or replaced anytime soon, and no, there aren't any other facilities in our area.

What can I do with free weights that will do the same thing for my back/shoulders?

I'm not trying to bulk up or anything, this is just for general fitness/toning/slimming.