The way education is being delivered has been altered via the rapid development of computer technology. This is especially the case in the delivery of English language teaching where the combination of various variables is pertinent to computer attitudes to enhance instructional outcomes. This paper reports the study undertaken to elucidate whether the correlation exists between TESOL in-service teachers' attitudes towards computer and their computer attributes scale and to explore the proportion of variance in TESOL in-service teachers' attitudes towards computer that can be explained by their cultural perception scale and computer competence scale. A questionnaire (ATCT) was utilized to obtain the necessary information about teachers' characteristics, their computer attributes, cultural perceptions, computer competence and attitudes of the sample (45) TESOL in-service teachers at Universiti Sains Malaysia. The results revealed that there was a significant correlation between teachers' computer attitudes and computer attributes. A further finding revealed that both of cultural perception scale and computer competence scale were predictors of teachers' computer attitudes; yet, cultural perception scale was the best predictor. Suggestions based on these outcomes have been offered in this paper.