Thanks, Simon. Good manual.
I add also.

For update KMZ i use Total Commander. After place cursor to KMZ file press Ctrl+Page Down. You see structure and files of KML.
In Configuration>Options>Edit\View can setup Editor by F4.
I use Emeditor free www.emeditor.com
http://www.download.com/EmEditor-Free/3000-2352_4-10527010.html


How you use Excel?