Errrrr, i would give u some servers but m8, i'm sorry to say that as I'm in Spain and ur in USA u'd have a horrorfull ping if u used the servers i do... Most of those i connect to are french and German servers, and some spanish ones...
As u can speak spanish maybe u can find some usefull info here http://www.hispadonkey.com i haven't checked it recently but it used to have good stuff
Spanishare things are at edonkey too