in reply to
Dynamic loading based on dropdown list - CGI Perl
To quote a most senior Monk, to a similar request, "This is not a code writing service."
Well, actually, I'm perfectly cheerful to say that on my own responsibility... and to add the common phrase, "Show us what you've tried. Post your code and explain how it falls short of your wishes." References: On asking for help and How do I post a question effectively?
Alternately, visit the Tutorials section for those tuts available here about using Perl on the web.