Is there a way that I can use the same monitor with both my desktop and notebook computers, without constantly switching cables?KVM Switch

You need a KVM switch (KVM stands for keyboard, video, monitor). This lets you hook a single keyboard, monitor, and mouse up to multiple PCs and notebooks. The actual computers can run simultaneously, while the monitor displays only what's running on the selected computer; the mouse and keyboard control the selected system.

A button on the front of the KVM lets you toggle between systems. In your case, you wanted the monitor to extend the amount of data displayed on your notebook. That's no problem, as long as your notebook supports dual displays.D-Link DKVM-2

KVM switches are particularly useful in server rooms, where dozens of servers can be hooked into one KVM. For your purposes, though, a personal KVM switch is perfect. A good place to start is with a D-Link DKVM-2 ($49 direct), which can handle two PCs. (Similar switches are available from companies such as Avocent, Belkin, and Linksys.) The DKVM-2 comes with two PS/2 mouse ports and two PS/2 keyboard ports. As with most switches, the cables cost extra, so make sure you buy the shortest cables you can. Six-foot cables are about $15 each.

If you're using a notebook with only one PS/2 connector, you may want to use a docking station with two connectors. (D-Link Systems Inc., )

—Richard Fisco, Technical Director