Three-pane Mail.a tur into a plug-in

Well that was quick. First Mail.a received a widescreen, three-pane face-lift, and now it's been morphed into a plug-in. The author provides two different sets of i tructio for i talling: drag and dro ing into your ~/Library/Mail/Bundles/ directory or using a couple of commands in Terminal. Go nuts ladies and gentlmen.