I know that this is discussed before, but i can't find any solution
anywhere?

My system:

Fedora Core 2
j2sdk-1_4_2_04-linux-i586.bin
FirebirdSS-1.5.1.4481-0.i686.tar.gz
FirebirdSQL-1.5.0RC4JDK_1.4.zip
jakarta-tomcat-5.0.28.tar.gz

When I display some data from the database in cyryllic, at the
browser, it shows me ????? (question marks). Even when i pass from
one JSP file to another JSP cyryllic data it gives me ????? again
(in a form for example).

In FAQ of the JayBird they say to put the "-Dfile.encoding=Cp1251"
parameter to JVM, but first how can I do that in linux? How can i
pass parameters to Java Virtual Maschine?
Or if this will not help, can anybody tell me a solution?

Thanks in advance....