Jenni has been writing up all of the thank you cards for the baby shower (Jenni and I definitely owe a HUGE thank you to everyone for all of the time, energy, and gifts that they put in), and I was given the task of putting the addresses on all of them. I definitely wasn't going to write them by hand and copying and pasting each of the addresses into a label template seemed tedious, so I did a little googling and I found this. It definitely drove me totally nuts at first, but if you follow all of the steps, it actually works and starts to make sense. I wish I could attach documents to a post, so people could see an example of how it's done, but the little walk through thing is pretty detailed and should tell you everything that you need to know.
On a side note, I actually tried just following the steps from the web page and step 2 wasn't working properly, so I had to type "Print mailing labels" into the ask a question box and select the same article and that fixed it for some reason. Don't ask me why, but it did.