Garmin Streetpilot i3 GPS cannot load map to... Try to load from cd that was load into computer

Question

Try to load from cd that was load into computer and followed on screen instructions now connect the usb cable from GPS to computer and went to some steps and at one point on screen will saynot communicating with gps memory card. A message says if you continue to get this error, please check the following URL for additional information www.garmin.com/usbgpsfaq. PLease help me out so i can use my Garmin Streetpilot i3 gps. Thankyou, Kenneth/lomegarmin nuvi 250w special edition HELP! down load upgrades will not load !!!!!!