Translation of Projektleiter

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.
I have always met nice people so far, and I have never had a strange friends request. So far I only had problems with my grammar in various foreign languages that I am trying to acquire.
Do you speak three languages? Wow? I'm sorry that I am writing to you just now but I have a lot on my mind at the moment. My daughter had a cold and the nanny, too. I needed to stay home.