Considering a Christmas PC purchase for the home? A Pentium II- based machine or even a cheap Cyrix-based system should surely be more than good enough for a little light work and web surfing at home? Not if Intel gets it way. Tiring of waiting for Microsoft to introduce new software that can only be run on the latest and greatest Intel microprocessors, Intel is starting to take matters into its own hands. The company is developing a three-dimensional graphical user interface, code-named Miramar, that sits on top of the Windows operating system and, surprise surprise, can only be used in conjunction with its forthcoming Katmai processors. In addition, Intel is employing outside web developers to create new features for web pages explicitly to scrape the performance of their processors down to zero, according to one developer.