or download this
C:\Perl\cpan\build\Net-LibIDN-0.11-QaNUHQ>perl Makefile.PL --with-libi
+dn=libidn-
1.9 --with-libidn-inc=libidn-1.9\lib
Set up gcc environment - 3.4.5 (mingw-vista special r3)
...
libidn-1.9/lib/idna.h:82: error: syntax error before '*' token
libidn-1.9/lib/idna.h:86: error: syntax error before "uint32_t"
This module requires GNU Libidn, which could not be found.