Nowadays, computer has established itself as an important part of modern life. It is no longer listed as a very expensive, large machine exclusively used by government, military and science researchers. Many of us use computers, it is essential in our everyday life as it is gaining important role in language teaching and learning also. The main point if this paper is that how effectively promote second language vocabulary building the using of different mediums, especially using computer. The focus is on the importance and variability of different vocabulary learning and building possibilities offered by PC. In addition, my research on secondary school students in intermediate level aims to reveal facts about their learning habits and beliefs in computer aided language learning. How do they think about it? Are they impressed by this helpful tool of learning? Is computer aided language learning really valuable, handy or just a secondary device?