Abstract: The role of libraries have change from that of collection development and organization of library materials to an information support personnel and an access point to relevant and timely resources. Application of computer to library services has changed library roles and operations with the last decade in Nigeria. This study, therefore assessed the attitudes of sectional heads and library staff to the use of information technologies in first generation university libraries in south-western Nigeria. The selected universities were Kenneth Dike library (K.D.L ), University of Ibadan; Hezekiah Oluwasanmi library (H.O.L ), Obafemi Awolowo University Ile-ife and the University library (ULAG) , University of Lagos, Lagos, Nigeria. The library staffs were categorized into three groups; professional, paraprofessional and junior staff, one-stage random sampling was used to sample 50% of the respondents in each category. In all, 80 respondents were chosen and structured questionnaires were used to collect the data. Descriptive statistics was used for analysis. The study revealed the level of automation of each library. None of them is fully automated, though most of the library staff in the three universities had some basic knowledge about information technologies but only few can practically work with the facilities. At ULAG, CD rom was rarely used while computers were made available for use occasionally; e-mail services were used regularly. At HOL, computer were used regularly while CD rom and fax machine were been used occasionally. On-line public access catalogue, computer and fax machine were used regularly at KDL, while CD-rom database and electronic-mail (e-mail) services were occasionally used. It should be noted that most library staff in 3 university libraries rarely used library database searching. Lack of fund for proper maintenance and adequate IT training of library staff were major problems of the use of information technology. In conclusion, information technology usage should be made compulsory for every library staff so that all will be involved at every aspect for more efficiency and a positive change of attitude in the library. There should also be more resource sharing and co-operative lending services among these university libraries.