Recently I tried to install Tk.pm on cygwin ( windows ) and I have encountered problems trying to install it via CPAN.
So I googled the web for anwsers and came upon a solution from another forum. I tried it myself and it works, so I thought that maybe other fellow monks strugle with the same and this node might help them. I am sorry if this is placed in the wrong category.
First of all here is the direct link to the anwser I found on google: link
The one that helped was the post on the bottom signed by H.Merijn so all credit goes to him, thanks.

Ok so we have the formal stuff done, now let's see what to do to get this Tk up and running.
Open your cygwin command line and type the following commands:

wget http://search.cpan.org/CPAN/authors/id/N/NI/NI-S/Tk-804.027.tar.g
+z
tar -zxvf Tk-804.027.tar.gz
cd Tk-804.027 
perl Makefile.PL x 
cd pTk 
ln -s tkUnixDefault.h tkWinDefault.h 
cd .. 
mv Makefile Makefile.old 
sed -e s/tkWinDefault.h// Makefile.old > Makefile
export LDLOADLIBS=/usr/X11R6/lib/libX11-6.dll.a
export PERL5LIB=`pwd`/blib/lib:`pwd`/blib/arch 
make 
find . -name \*.dll | xargs rebase -v -b 0x68000000
make test 
make install
[download]

Be sure to have X server up while you make the tests. There are moments in thoose tests that you might think it hanged, but be patient it will go on eventualy. When I tried it on my cygwin all tests passed without any problems.

Hope this node will help at least one person ;)