can the old Garmin Roads and recreation CD be used on a 60CSX ? will it work from a new computer with windows 8 to a micro SD ? should I just remove the card with City nav and put in a new card and connect the 60 to the computer ? or should I use the micro to macro Sd adapter and plug the SD to the computer ? should I just select maps I will be using ? it looks like all the City Nav maps are selected for display, is there an advantage to unselecting some ?