This survey was conducted in 1999 when few schools in Kenya had computers; and the country lacked relevant policies. The purpose of this study was to determine factors that influence the use of computers by secondary school teachers of Western Province in Kenya. The research questions were: Q1. Is there any significant difference between the way teachers use computers and the potential use of computers as identified from literature? Q2. Is there any significant relationship between the teacher’s type of training, experience or qualification and their level of use of computers? Q3. Is there any significant relationship between the attitude of teachers towards computers and the teachers' experience and type of training and qualification? There was no clear rationale for introduction of computer in schools. Attitude towards the use of computers was positive. It increases with teacher experience. However, 88% of the teachers did not use computers regularly. Teachers with Diploma qualifications were more likely to use computers than graduates. Heavy work load was blamed for not using computers. One's teaching subject and gender were not significant.