If you want to download Eclipse, you must choose between version for Java Developers and Java EE Developers.
Eclipse for Java Developers has plugins for creating GUI with Swing, but it lacks other useful plugins such as plugins for working with database. These plugins are installed in Eclipse for Java EE Developers.
It would be nice to have them all together. In order to do that you must download and unzip Eclipse for Java Developers and install plugin named web tools platform.
First google web tools platform update site. Next find URL of a update repository. It begins with http://download.eclipse.org/webtools/repository/ and ends with name of your Eclipse. At the time of creating this screencast current Eclipse version is Indigo. So this URL will end with indigo.
Next in your Eclipse select Help -> Install new software -> type URL of the repository, press enter and install WTP plugin. After successful installation your Eclipse will have both plugins for Java Developers and Java EE Developers.