You can turn this into an EXE by running Perl2EXE on it...

UPDATE: That'll teach me to skim posts...

With Perl2EXE it should just be a matter of running perl2exe stock.pl (assuming stock.pl is the name of your script). Bear in mind that if the URL ever changes, you'll need to change the source code and recompile it. You may want to put the URL into your config file as well rather than having it hardcoded.