Sorry if it's a repeat.<ul><li><a href="http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=46030">Code reader</a></li></ul>

If its not a VW/Audi/SEAT/Skoda vehicle then VAG-COM software won't be of much use but the interface (such as the HEX-COM I have) is still usefull once you get the right software.

If it is a VW/Audi/SEAT/Skoda vehicle no need to bother with this basic device if you already have VAG-COM.<ul><li><a href="http://www.ross-tech.com/vag-com/tour/obd-2.html">http://www.ross-tech.com/vag-com/tour/obd-2.html</a</li></ul>