Step 1 is to download and install either Strawberry Perl or ActivePerl. If you don't have authorization to do something like that, speak to someone who does or who can authorize you to do it. You current Perl language tools are sorely outdated, since Perl 5 has been available for more than a decade.

There is no way to get modules to work with Perl 4 without changing Perl 4, which is no longer actively developed. Perl 5 is up to 5.10.x and still being actively developed. You really want Perl 5 for any new development in Perl.

You might also be interested in other SSH modules once you get Perl 5 installed. One to look at include Net::SSH::Perl (which is implemented in Perl instead of as a wrapper, Net::SSH2 (which is a wrapper around libssh2 but not around a command-line ssh client), Net::OpenSSH (which is a wrapper around parts of OpenSSH), and possibly something more task-specific in the long list of SSH modules on CPAN.