Rick,
The MyEclipse all-in-one installer doesn’t include the SDK plugins from Eclipse since the vast majority of our users are not Eclipse plugin developers. However, if you’d like develop plugins with MyEclipse installed you can certainly do that. All that’s needed is to either install the all-in-one installer and then “look for updates” and install the Eclipse PDE plugins, or begin with a full Eclipse 3.2.1 SDK installation and use one of our other (not all-in-one) installers to point to that SDK installation during the MyEclipse installation process.
Tried installing eclipse-RCP-SDK-3.2.1-win32.zip and MyEclipse can not startup.
That’s not what you need and it’s enough enough to launch MyEclipse. Doing what I outlined above will get you a working install for RCP and plugin development along with all the MyEclipse tools.