Since its introduction in 1979, CHEAPO, a computer based economic analysis program, has allowed users of the Stand Prognosis Model to evaluate silvicultural alternatives from an economic point of view. Subsequent modifications to the Prognosis Model have rendered CHEAP0 obsolete. This users guide covers a new computer model, CHEAP0 II, which is compatible with version 5.1 of the Prognosis Model and expands its economic analysis capabilities.