Skunk in basement

[Copied from email I just sent to a mailing list.]

Hi. So I was just down in my basement and I heard some rustling. Turns out there's a skunk in the corner. My renters have been moving stuff out of the basement, so I'm guessing it got in when they left the door open or snuck in while their backs were turned.

Any advice on getting a skunk out of a basement without getting sprayed? My first thought is just to open the door and hope it leaves, but what if it decides it likes it better indoors (as I do)? And what if it decides its family should come join it?