Perl Scripts, re-writen

I have a software package which was writen in Perl, and I need it customized, this script was writen for my about 2 years ago, and I need some changes made to it. The package contains 26 small files, some of which are just data storage files.? I can no longer find the old programers so the process will need to be mapped and a good understanding of the process will be part of the project.? I am very open to improvments and redesigns. I would recommend asking for the files before submitting your bid.