I just bought a Garmin eTrex GPS. How do you tranferr the coordinates from the website to the unit. The owner's manual is not helpful at all. It tells you how to mark your current location, but not how to enter the new coordinates. Also, I downloaded to Garmin program into my computer but I can't even find the program. I also tried to down load the EasyGPS program, but it cannot talk to my unit because it is looking for a serial port and this is USB. I really need help!