For a program that runs successfully elsewhere I am receiving the error "Undefined subroutine &main::param called at (my piping/location and the name of the perl program)" on Perl

You have not shown us the source code of this program - that makes it almost impossible to say what is wrong. Best guess is that you have forgotten to include the line:

use CGI ':standard';
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I'm sure you are aware that your versions of O/S, Apache and Perl are very, very old now. On dedicated hardware there's maybe not much you can do about that but it is likely to cause you more problems that using more recent releases.