You could easily just run all of the quest sayings through babelfish if you wanted a Spanish server. It would be kind of weird if you hailed an npc and it just hung there trying to connect to something for the response though... people could easily think it's just broken instead of waiting.
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++[>++++++<-]>[<++++++>-]<.>++++[>+++++<-]>[<
+++++>-]<+.+++++++..+++.>>+++++[<++++++>-]<+
+.<<+++++++++++++++.>.+++.------.--------.>+.
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