Getting you, your family and your friends in and out of the house is not the only thing an exterior door is about. When you install a door you want it to swing smoothly, latch tight, seal out the weather and be secure. You can get a big head start on reaching these goals by choosing the right set-up to begin with, and this usually means buying a pre-hung door. In this DIY video tutorial, you'll find step-by-step instructions for installing a pre-hung door in your own home. For more, or to get started on your own door installation project, watch this how-to.