In case anyone else has difficulties:

Go up top and click on My Stuff.
Click on My Messages.
Click on Options.

You will either have to type or copy in the person's name in what in my opinion (and I'm always right, you know) should be called the address box but which is labeled Add Recipient . I think, to get somebody on your Buddy List, you go to their profile* and click on Add to UBB Buddies . I honestly don't know whether they have to agree, or not; but I don't think so.

*It can take a long time to find someone's name to click on if they haven't posted in a long time, now that we no longer have the list of members we used to be able to access.

EDIT--you can also go to the person's profile and simply click on Send a Private Message .