Hi, I used macports to install ruby 1.9 (because my rubygems fell off the map when I installed fxruby >.<)
$which ruby1.9 /opt/local/bin/ruby1.9
$which gem1.9 /opt/local/bin/gem1.9
But I'm pretty sure my Ruby bundle is still using 1.8, Is there a relatively pain-free way to switch it over?