Hi,
I am a full-time developer of Perl and CGI, and I work with most platforms (Linux, Solaris and Windows) and would like to help with your task.
You can check my existing ratings on Freelancer and also see that I have cleared Freelancer's Perl Certification, and thus be ascertained of high quality results in expected time.
I will also use proper Perl packages to ensure there is OS-independent code and ensure that the code meets your performance and functionality needs.
I will be able to give actual estimate of the bid amount once the work details are clear.
Regards,
Rushin