Hi,
    Lately I've been seeing articles about getting Darkness 
or Metal energy 
faster.  The fastest way is to use Porygon 2 from Neo 3.  It's 
power can 
change 1 basic energy card attached to a pokemon to any other type other 
than 
colorless.  Darkness and Metal types so therefore you can change any 
one of 
the six basic energy to there types!!!!!!  4 Porygon 2 means 4 
Darkness or 
Metal.  Hope this helped.  Until next time.....
Ryland Pigg
Getpigg@aol.com