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 user's 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. CHEAP0 II allows users of the Prognosis Model to analyze the economic aspects of management treatments projected by the latest version of the Prognosis Model and its associated extensions: the Regeneration Establishment Model and the Douglas-fir Tussock Moth Outbreak Model. CHEAP0 II has been designed to allow users flexibility in the types of stands that can be analyzed (existing or regenerated), the types of management regimes analyzed (even- or uneven-aged), the types of economic analyses undertaken (present net value, soil expectation value, and present net value plus), and the economic decision criteria that can be used (present net value, benefit-cost ratio, and rate of return). CHEAP0 II represents a powerful analytical tool for analyzing proposed investments in stand management alternatives. From a user's standpoint, CHEAP0 II functions very much like the old CHEAP0 and its input format was patterned after the Prognosis Model. CHEAP0 II uses information from two data files-one generated by the Prognosis Model and the other provided by the user. The user-created data file amounts to a set of instructions to CHEAP0 II through keyword records. These keyword records instruct CHEAP0 II as to: (1) which of the three types of economic analyses is to be per formed; (2) the costs and revenues associated with a variety of silvicultural treatments; and (3) how output and reports are to be presented. CHEAP0 II execution ends with printing of tabular output displaying the set of instructions given CHEAP0 II, economic analysis results, a listing of the undiscounted cash-flow, and optional stand tables. This user's guide describes the CHEAP0 II model, the model's input data requirements, and the model's tabular output.