Caracteres ASCII Postgres

Hola compañeros acabo de instalarme el postgres plus y al iniciar el postgres studio que es muy similar al pgAdmin III pues al elegir una bd me salio un mensaje como el siguiente

Database encoding
The database edb is created to store data using the SQL_ASCII encoding. This encoding is defined for 7 bit characters only; the meaning of characters with the 8th bit set (non-ASCII characters 127-255) is not defined. Consequently, it is not possible for the server to convert the data to other encodings.
If you're storing non-ASCII data in the database, you're strongly encouraged to use a proper database encoding representing your locale character set to take benefit from the automatic conversion to different client encodings when needed. If you store non-ASCII data in an SQL_ASCII database, you may encounter weird characters written to or read from the database, caused by code conversion problems. This may cause you a lot of headache when accessing the database using different client programs and drivers.
For most installations, Unicode (UTF8) encoding will provide the most flexible capabilities.

al parecer me pide que codifique mis caracteres para la bd no se que deba de poner que conjunto de caracteres uso? si alguien me podria ayudar ya que no entiendo muy bien del tema

les dejo mi mail francrv(at)hotmail(dot)com

Saludos

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