Here is a kml file with all the Mexico City metro stations, with their own individual logos. Let me know if there are errors/problems (I am working on an update to fix some slight erros in location, and I'm also adding the Tren Ligero ("Light Train" rapid rail) line with it's symbols as well.

(updated June 13th 2006; made it into a network link, so people always have the most recent version)

(edited again June 14th: network link wasn't working with older versions of GEarth, due to tag changes; uploaded corrected version)