Holux GR-271 CompactFlash GPS Navigation Receiver
actually i bought one from the compouter geek, and i received it in only 3days, amazing. and i just plug the GPS in the my PDA(Dell X51), and without a minute, signal light flashes, and it locates exactly in my street. awesome~ <br /> <br />by the way, i am using a software named 'Mapopolis', use com4