Remove the first and the last line and run it with

perl -Mre=eval star.pl
[download]

To see what it does, run

perl -MO=Deparse -Mre=eval star.pl
[download]

You will need a curl executable, since the script fetches a file from the Zapatista Web page with curl.
If you don't have curl, you can just copy over lwp-download.bat to curl.bat in your strawberry perl/bin folder. Note that the retrieved page will be saved to index.htm in the current working directory. It is in spanish, but there are links on the page leading to translations into other languages.