It's really easy.  Just write a pile of code for some module that hasn't been updated in a while and send it to the maintainer.  Seriously, though, I'm now the maintainer of Net::SNPP on CPAN, which I'll probably be releasing an update to today (v1.15).  I added Net::SNPP::Server and a test script (rudimentary) to verify that things still work.  Net::SNPP now functions properly when sending 2-way messages to my Nextel phone and retrieving my replies.  I also added three scripts to it for sending those 2-way messages, retrieving replies, and a server using ::Server.   The real question is: does anybody actually use this thing besides me?
I'm also chatting with the guy who wrote the initial Nagios::Config modules, but doesn't have much time to work on them anymore.  I wrote a bunch of objects to handle hosts, service, and timeperiods, so all they need now is a configuration parser.  Easy right?  Just Extract the Practical parts of the configuration and Report it using some programming Language.  Hmm ...