In a few minutes, I searched it at CPAN, readed the documentation, decided to intall it and... voilà... it works!! In my opinion this is a very nice piece of code, and if you don't know it, you must try it. It can download, build, install and manage a set of perl versions, and you will discover a new wonderfull way to work with Perl. Enjoy it and many thanks to that kind of smart people that share amazing tools.... so thaks, Kan-min Liu.
Yo can find perlbrew here (CPAN).