This page has info on conversion scripts which help converting from tarballs found on the CPAN network to the local package format e.g. .rpm, .deb, etc.

Most package management systems allow you to install perl modules via a shell command. e.g. yum install perl-libwww-perl on RedHat or aptitude install libwww-perl on Debian. Almost every distro has something like this, Activestate Perl on Win32 even has PPM. You could write a shell script to install the various modules you need.

I prefer to use CPAN as most package management repositories only have a subset of the CPAN modules in the local format, furthermore, they arent guaranteed to be up2date.

$ cpan -i Tk
[download]

Or using CPAN from within a perl script itself.

#!/usr/bin/perl -W
use strict;
use CPAN;

while (<DATA>) {
  chomp;
  install $_;
}

__DATA__
Foo::Bar
Foo::Baz
Foo::Quux
[download]