Translation of backer in Spanish

Can you translate: Are you using the firefox browser? Install this tool in your browser window. The ones I suggested the other day are the most useful ones, because we would use it for generic terms which differ from Spanish.
There might be another reason why the house was hit. Some houses have a little infrastructure problem and cannot protect themselves against flash lights. That means they are in constant risk of fire which can lead to catastrophic outcome.
How long have you had your dog? Does your wife take him for a walk too? Please send me my e-mails to the address listed below and add your own pictures too. I want to know a lot about you.