• If possible, upgrade your version of Perl to 5.8. The version you are using is about five years old.
• You may not be able to use CGI because it was never installed. Running

  perl -MCGI -de 1
  [download]

  should tell you whether CGI.pm is installed or not. Check with the System Administrator if in doubt.
• What do you mean when you say sysread and BEGIN aren't recognized? You need to present code examples for us to even begin to help you.

This forum helps people with Perl problems. CGI and HTML are topics that may be Perl-related and may not be.