Accents with turbine

[Sez]

Hi people,
    I work with jetspeed 1.5. I work with spanish and catalan. Users need
write words with accents. All letters with accens go fine. My problem is
with e with grave accent (accent to left). When I do
rundata.getParameter().getString(STRING), this convert the e to strange
character, this ?.
    Should I to work with  iso-8859-1 (latin characterset)? I can see in
rundata.getRequest() that turbine works with UTF-8.  
    Some ideas???