Hi Peter,
The EasyStruts plugin for Eclipse does not work with the 3.0 versions of Eclipse.
Struts Console works with all versions of Eclipse and provides a similar graphical editor for config files (in fact EasyStruts was based on Struts Console).
http://www.jamesholmes.com/struts/ If you need something more sophisticated than Struts Console, you may want to check out Struts Studio from Exadel.
http://www.exadel.com/ James