1) What do you mean by "visual editor"? A way to edit Swing? JSPs? something else?
2) As far as I know, converting a program to an exe is separate from the IDE. Take a look at this thread or search the forums for exe to get some more examples.
I think they intend it to work with Swing but I have not used it in swing yet.
The best way I have found is to use eclipse Updater to download and install the package from within eclipse. I had trouble trying to download and install it manually.
Should be a project called VE. Find and read instructions. Eclipse Updater is preferred method.