problem with character set

i am exporting my mssql database to linux postgresql, and i got some problem

when insert the follow characters áéíóúñÑ, this character was inserted diferent,

this cause a big problem because, my data will not be the same in postgresql

 

s.o.s

 

what kind of character set most do i have to install in postgresql, or linux?

:-) Sidar Lopez Cruz
- Cero Riesgo, S.A.