I know there's a way to back up your journal by downloading it to your computer, but that's kind beyond my pay grade. Too complicated for me to even attempt.

If your journal is relatively small, you can mirror the whole thing over at DW. A few flisties have done that, and I tried it, but I've got way too much material. Basically got an error message saying "Whoa! Whoa! Too much!" and there's no way to tell it, "Just copy *these* posts." But yours is much less extensive than mine, so you could probably do it. It's like a 3-click process.