Update Sites
If you are already familiar with installing Eclipse plug-ins, you can just use the update site URL below for your version of Eclipse.
如果你已经熟悉安装Eclipse插件，你就可以使用下面的更新站点URL为您的Eclipse版本。
运行Eclipse-->Hlep-->Install New Software
在红色框中输入一下对应的Eclipse版本然后下一步直到选择"I accept..." 然后再点''Finish''即可
Eclipse 4.2
http://download.eclipse.org/windowbuilder/WB/integration/4.2
Eclipse 3.7
http://download.eclipse.org/windowbuilder/WB/integration/3.7
Eclipse 3.6 (Helios)
http://download.eclipse.org/windowbuilder/WB/integration/3.6
Eclipse 3.5 (Galileo)
http://download.eclipse.org/windowbuilder/WB/integration/3.5
Eclipse 3.4 (Ganymede)
http://download.eclipse.org/windowbuilder/WB/integration/3.4