Haunted house episode

can anyone tell me the name of, or tell me where i can find the episode, i think it was season 1 or 2, where the parkers win a trip to this haunted house, and arthur falls through the floor or something and finds a box full of money, but it says he has to stay there forever or something?? sorry, my memory's quite vague, but this episode used to scar the hell out of me. any help would be much appreciated.