Internet has been widely used by manufacturers and distributors to expand product markets for its advantageous in quick process, practicality and low cost. Jaya Abadi Computer (JAC) as a sales distributor and service agent of computer equipment still perform its direct marketing manually on the spot, so that the marketing only reaches a small scope. This article analyzes the market opportunity of JAC; determines the marketing strategy and builds e-marketing website for JAC based on customer experience using The Seven Stage Cycle of Internet Marketing. The results obtained are an e-marketing website to support the marketing activities of JAC. Eventually it can be concluded that by building an e-marketing, JAC can reach as well as expand market opportunities in virtual world, use the right marketing strategy, and meet customer needs through features on the website