Apple Remote Desktop 2.0, just now shipping, is significantly slicker and more powerful than earlier versions, but with great power comes inconvenient installation issues: the admin requires that clients be updated to 2.0 as well, which can be done remotely from the admin console. However, Apple hasn't yet provided a downloadable ARD 2 client installer -- and if you're planning to install the client on a machine image or other locale, it would be nice to have one...
The contextual menu "Show Package Contents" comes to the rescue, as usual. The actual "Remote Desktop Client200.mpkg" client installer lives inside the Remote Desktop application package at /Contents -> Resources -> Installers; just control-click on the application and Show Package Contents, then navigate to the folder and option-drag the client installer to the desktop.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20040802111556904