I downloaded the one click poi file for all Harley Davidson shops in the US. I copied the file to the poi folder on my garmin zumo 550. I can find the locations by going to extras and custom poi. This device had a custom button for Harley Davidson which showed only the Harley locations. I cannot find where to put this poi file to replace the Harley shops that are already loaded from when I purchased this device (2009) Any suggestions?