Today, computers are practically as important to a child's education as books and pencils. That's why parents pay such close attention to how well their children's schools are equipped. And that's why buying used is such a smart idea. At CDI, you can purchase the brand name equipment you're familiar with — from IBM to Compaq, Hewlett Packard to Dell, Sony to NEC — at a fraction of the cost. Plus, CDI-Certified equipment has been thoroughly tested and cleaned, and is backed by the best warranty in the industry. All this and great technical support, too. But the bottom line is, when you purchase CDI-Certified equipment you can purchase more computers per student.