Facebook changes it's interface that much, when you go to do something you don't know how.

Having some time on my hands I've created Smart Lists for my contacts, Now I would like to send a private Message to these groups for example Family but how can that be done? -- Without that is Typing everyone's name into the recipient box.

Surely this can be done, it doesn't seem to much to ask or are they that paranoid at HQ?

Thanks for your help!!!!!!!