problem with screenreader

Hello, I'm an Italian blind user and I'm looking 
for a screenreader or text-to-speech application 
that could allow me to use graphical application 
such a web browser, a newsgroup reader, 
OpenOffice...
I configurated kttsd with the Italian voice of 
Festival but I encountered a problem that make 
that application almost useless: if I try to have 
read long texts (for example an entire web page 
or a long post) it does not speak at all, it 
speaks and works only with short texts. I also 
installed gnopernicus in kde but I cannot make it 
speak. I have kubuntu and kde 3.5.8. Could you 
help me? Could you give me some instructions 
(more precise possible becouse of my blindness) 
to make work on kde a screenreader?
-- 
...
[email protected]