Do you have an SD card in your 62s? If so, you can download free Garmin-compatible maps for your unit here:
http://garmin.openstreetmap.nl/
Here is a link for information on how to use the site:
http://wiki.openstreetmap.org/wiki/G...tMap.nl:Manual
Basically you just select the region you want, click the download link, and then when the next page comes up you can download the "osm_generic_gmapsupp.zip" and extract the IMG file that is in the zip onto your 62s SD card.
You can put as many maps as you need, depending on the size of your SD card.
Once you load them on your SD card, on your 62s go into your Setup / Map / Select Map, choose the maps you want turned on and select 'Enable. The maps will show up on your device and work perfectly.