You might start with these nodes from Categorized Questions and Answers

• How do I get at the parameters in my CGI program?
• A Short Guide to DBI (Shamelessly swiped from Re: What are placeholders in DBI, and why would I want to use them? by btrott)
• Perl modules for flat file databases
• Why can't I install the DBI module?

Russ
Brainbench 'Most Valuable Professional' for Perl