When I did a Google search on the name, the first entry was this, which contains both the words and a MIDI. And here is another, which even includes the music, melody only.
Sheet music with arrangements is harder to come by. There are plenty of places to download it, but they all seem to want money for the service, even when they've photocopied someone else's sheet music.
Thanks! The second one's great. I see it's from "mudcat" which I used to check occasionally for lyrics. Better look at it again if they have some notated tunes now.