BestBuy, Staples, Radio Shack, or Wally World.
Take your GPS to make sure of that connection.

I have a way of downloading updates to the PC, but what I saw the site included even Australia. Got a little lost because North America was included, but it appears to be a huge d/l.

where is the USB port on the garmin nuvi? is it the same port as the power plug?...gn

Yes same port, it's on the back of my unit.

As I recall, the 1st time you download updated maps from Garmin, you also get software that sets up the step by step proceedure for the update. As others have mentioned, it takes a while but is pretty easy/intuative.

thanks everyone...gn

Garmin Update
 

Received Life Time Update as a gift.It does take forever to download but I am now updated to include all golf courses and existing streets in the Villages.Well worth the effort,by the way my unit is a Street Pilot 340 so the older models are no problem.

Some of the older Garmin's cannot be updated. Two friends have two older models and only one could be updated with all the maps in North America and to do that we needed to add an SD memory card as the unit did not have enough memory. The other unit was just too old and did not have a slot to add memory.