Bob ,
I think you post on an earlier thread in early December. You might want to go and looked at the posts.
http://www.dr1.com/forums/living/82488-spike-protection-electrical-items.html
Sorry to hear that you got zapped. If you look at your electric bill it shows you what type of connection you have - it is probably Baja "120/240 Doble Monofasica"
This would be three wire - two hot and one neutral.
I have recently fitted a Square D surge protector, four THQLSURGE units by GE , and one THSASURGE60 also by GE that is good for 30,000 amps surge. These are all available in the US and on line. Not very expensive really.
Square D required an earth as does THSASURGE60, but in the instructions for fitting them there are alternatives in no "earth" is available. THQLSURGE fits directly into any GE Load centre so is easy to fit.
The experience so far has been good with these and noticeably reducing the effect of surges.
HTH
Olly