In this age of Information Technology, there have been so many opportunities for the Librarians for involvement in an information-based society including electronic and multimedia publishing, Internet based-information services, global networking, web based digital resources etc. The base of recorded information is growing at an accelerating rate, in increasing varieties of formats (texts, numeric, graphic, video, audio, image, electronic, etc.). Virtual Library can be defined as the Internet based Digital Library. The concept of “Virtual Library” is that any person who has a computer by which he can make connection to the library networks can access not only the resources of the library but also access variety of information that is available nationally and internationally through networks, like Internet, Intranet without being physically present in library. This article explains what is meant by a Virtual Library and to build a virtual library in what way the Librarians have to change their roles to face the challenges of modern Information Technologies in the changing environment. Also this article, discusses about the changing role of librarians, the skills needed to build a virtual library and how the virtual information should be collected, managed, preserved and disseminated to the millennium users
