Quiet in here, isn't it?
A bit of googling turned up some leads to follow up on:
[url="http://www.sonsdamusica.com.pt/"]http://www.sonsdamusica.com.pt/[/url]
Maybe a better bet:
[url="http://www.oficinadaguitarra.com/"]http://www.oficinadaguitarra.com/[/url]
and probably massively out of date:
[url="http://www.cybozone.com/fg/luthier.html#portugal"]http://www.cybozone.com/fg/luthier.html#portugal[/url]
It might be worth contacting someone from here and asking them for recommendations:
[url="http://www.mandolincafe.com/cgi-bin/builders/searchdb.cgi?uid=default&view_records=1&keyword=portugal&submit=Search"]http://www.mandolincafe.com/cgi-bin/builde...p;submit=Search[/url]
any clues as to what you are looking for?