I think you can do what you are after from cpan. Do (as root, probably):
As this is probably the first run it will walk you through setup.
- - - - -
Once you're done, and at a prompt:
was enough to spew a, rather long, list of installed modules.
Also handy may be:
cpan> install Module::Name
(with Module::Name being what you want to install).
This is an interface to the perl cpan