Basically, you mark out ships on your side of a Scrabble board on a piece of paper you hide. When a word gets played, the tiles that get played count as hits against your enemy's ship(s). Of course, I don't have Scrabble myself, but I'll bet someone out there does. :)
Also, by next weekend, I will be completely out of debt. No more credit cards, no more mortgage. Anyone want to celebrate with dinner, a movie, Scrabbleship, or something? :D