This paper reports an Ex post facto design investigation of undergraduate students' attitude towards computers and their performance in introduction to computer in Cross River State of Nigeria. Four hypotheses were formulated to guide the study. Computer Attitude Scale (CAS) was administered to 1000 randomly selected third year undergraduate students from five faculties namely Arts, education, management science, medicine and science during the 2005/2006 session. The data collected were subjected to statistical analysis using Population t-test for single means, Pearson Product Moment Correlational Analysis, Analysis of Variance and Fishers' LSD Multiple Comparism Test. The results of the analyses showed that undergraduate students have positive attitude to computers; undergraduate students' attitude towards computer was positively associated with their achievement in introduction to computers. Results also showed that gender, age and faculty were factors that predict computer attitudes and achievement. Based on the findings recommendations were made.