Well, the first thing I'd try (as part of my Brute Force & Ignorance™ testing style) is to see which of your scripts work on the office server without change. You may luck out and have no work to do or find that the work is trivial.

If that doesn't work and you think changing the scripts is too much work, you could try convincing the sysadmin who manages your office server to install Perl 5.8 (recommended course).