The Hewlett-Packard LaserJet 5P printer I liked so much (Apr. 10) is no longer so distinctive in its ability to accept commands via laser from your laptop. The $135 JetEye from Extended Systems (800 235-7576) plugs into the parallel port of any printer and allows you to print files from about three feet away. A special connector lets you keep your desktop computer hooked up to the same port. Some models of HP Omnibooks and IBM Thinkpads are among the laptops that could use the laser feature.