Originally Posted by FatChance
If you share where you found them perhaps someone in the future won't have to ask the same question again...
it depends on what system you are on xp or win7. I just did a search for *.ucx and include hidden files
win7 had it in c:\user\my name\appdata\roaming\garmin\maps\UnlockCodes.ucx
xp was this way-
C:\Documents and Settings\myname\Application Data\GARMIN\Maps