With reference to the discussions on driving licences there is a Guardia site in English, on the main land, where they will answer your questions in English.
The site is www.torreviejau.org/guardia-advice.htm
Since I drive a company owned vehicle I had to have a Spanish licence which I applied for via a local Gestor in Binissalem which was problem free and have since renewed it around Christmas time.
Renewal procedure was simple as it involved going to the approved medical centre in Inca (no waiting) do your medical and then the centre processes the renewal application on your behalf – total cost €81 stress free.
Hope this helps others.