Here is one possible way.

create *.bat file with following string:

PATH_TO_YOUR_perl\perl.exe PATH_TO_YOUR_FILE\your_file_name
[download]

And place that *.bat into your Sheduler

But i think you can simply tell Windows to open *.pl files with perl.exe (but not your Perl Express). After that you can place this script into your Sheduler.