This is Perl module Win32::Unicode. INSTALLATION Win32::Unicode installation is straightforward. If your CPAN shell is set up, you should just be able to do % cpan Win32::Unicode Download it, unpack it, then build it as per the usual: % perl Makefile.PL % make && make test (or nmake && nmake test) Then install it: % make install (or nmake install) DOCUMENTATION Win32::Unicode documentation is available as in POD. So you can do: % perldoc Win32::Unicode to read the documentation online with your favorite pager. xaicron