--with-mb-encoding?

To ./configure PostgreSQL 6.5.2 to run with JDBC 1.1.7 what encoding
should I use in the following:

"--with-mb-encoding   enable multi-byte support" (from
www.postgresql.org/docs/admin/config.htm)

Many Thanks,

Allan

Allan@ppc.pims.org

PS I found this:

Unicode can now be used in operating systems from Microsoft, IBM, DEC,
Sun, and Apple. Microsoft Windows NT uses Unicode as the default
character encoding in the OS; Windows 95 has most of the Microsoft
Unicode API in the MFC foundation class libraries. IBM, DEC, and Sun
offer Unicode in varying degrees of implementation, ranging from a full
Unicode development library provided with IBM AIX, to UTF-8 multi-byte
and UCS-4 wide-character support in Solaris, following the POSIX model.

at

http://www.isoc.org/isoc/whatis/conferences/inet/97/proceedings/A8/A8_2.HTM

so should I specify Unicode?  Guess that it is worth a try....  Guess
that I should check out the Sun site too.