The pros and cons of integrated learning systems (ILS) and stand-alone software for adult literacy instruction were examined in a comparative analysis that focused on their use in adult literacy programs in Canada. The comparison focused on the following variables: achievement gains in reading; changes in students' attitudes toward computers; changes in students' self-esteem; and the basic computer skills acquired by students. The four variables were assessed through a battery of qualitative and quantitative pretest and posttest instruments. A questionnaire was also administered to a sample of literacy teachers. The study established that using any computer software with adult students offers the following advantages: (1) students acquire basic computer skills; (2) computers give students privacy if they want it; (3) computers are considered prestigious for programs and attract more students; and (4) computers provide fast feedback for each student. However, some software packages may not be appropriate for adult students, and effective integration of software packages into a program's curriculum may be difficult. ILS were no more effective than stand-alone software in terms of any of the four variables studied, they did not provide student records, and they were much more expensive than stand-alone packages. (The full report's table of contents and the addresses of Canada's literacy resource centers are appended.) (MN)