Ag,
I believe there is some confusion here, the two files you listed above are two separate products. Lomboz is another product for J2EE development.
If you want to do J2EE development, I suggest you do a few things:
1) Download Eclipse 3.1.1 SDK, from here: http://www.software-mirror.com/eclipse//eclipse/downloads/drops/R-3.1.1-200509290840/eclipse-SDK-3.1.1-win32.zip
2) Download MyEclipse 4.0.3 from our site
Now unzip Eclipse from step #1 to a new location, like C:\Java, a subdir named “eclipse” will be created.
Now run the MyEclipse installer, point it at your C:\Java\eclipse directory and then pretty much keep clicking NExt until you are done.
Now launch Eclipse, and work your way through our quick start guides here: http://www.myeclipseide.com/ContentExpress-display-ceid-67.html
The way we wrote the quick starts can really help you get a feel for how MyEclipse works and get you started with a few simple J2EE applications. I would encourage you to start with this tutorial:
http://www.myeclipseide.com/images/tutorials/quickstarts/webprojects/
Then doing this tutorial:
http://www.myeclipseide.com/images/tutorials/quickstarts/htmleditor/
And then this one:
http://www.myeclipseide.com/images/tutorials/quickstarts/webdesigner/
After that, you should know a enough to try any of the other guides we provide. Please keep in mind that we are a tool provider however, so if you are reading through the tutorials and really feel like they lack indepth descriptions of the concepts covered, I would definately suggest to invest in a good J2EE getting started guide.
Additionally I would let you know one the more monsterous parts of J2EE are learning EJB’s, and a very popular alternative has become using Spring, so you may want to read into both.