Researchers have concerned about the link between Information Technology investment and performance. Indicators like productivity, profitability and market share could be improved by these tools. Among these tools, firms can now use Internet technologies for competitive purposes but, until now, their real effects are unclear. In this paper we try to provide some evidence about the impact of the Internet on competitive advantage in a Western European Industry. Also, we try to explain why the use of the Internet not always lead to competitive improvements in modern firms.