In this world of technology, the interface between man and machine is very useful in making things easier and is on ascend. This can be of great use in almost all sectors, more specifically the education field where we can make use of this for teaching and other applications in a way to improve and make class sessions more interesting for students. This is a world of technology, paved way for smart boards, which made these work easier. Nevertheless, these solutions to problems are of high cost, thus making their movement slow, in most of the countries. In these circumstances, we present our paper of Virtual User Interface, which consists of minimum hardware requirements of low cost with help of free open software available. The hardware consists of an IR-cam and a pointing device to detect the user interactions on a surface and the system is compatible with any video projectors. We truly believe that the proposed system will represent an important contribution which enables users to interact with machines quiet easily on a widespread basis with all the benefits.