If you've got a brick wall and you're thinking of installing a door, you may have thought you were out of luck. Not so! This helpful how-to walks you through the steps so you can see how it's done. First off, know that this is not a simple task, so be prepared to wield a brick cutter, which is a serious tool in itself. After that you'll be framing out the door, shimming it up, and installing the door. Go for it!