Microsoft Streets & Trips 2007 with GPS Locator is the bargain alternative to pricey, PDA-size GPS navigators from Garmin International, Lowrance Electronics, and others. Streets & Trips runs on any Windows PC (ideally, a laptop), and its GPS receiver plugs into the USB port.
The 2007 edition has some helpful enhancements from the last version, including a smaller GPS device that's just 1.25 inches square and more sensitive, so it does a better job of detecting satellite signals. Our test receiver, for instance, worked fine when placed on our car's passenger seat. With previous versions, we had to place the receiver on the dashboard or window to get a signal. Another plus: If you don't want to use the supplied USB cable, you can plug the receiver directly into the USB port.