when i try to run something as a java application, there are 2 things that can happen:
any output in the Eclipse console? If I remember your other thread correctly, you had the native library issues ironed out (or never actually gave you any grief)… Is Jmetest working for you? (Right-Click Jmetest.java -> Run As -> Java Application)
Good Luck mi hombre 
Hm no jmetest isn’t working either…
I am ashamed to ask but if i don’t have an output, how do i get one in eclipse?
here is another screenshot (i think this can be easier to find the problem :p)
i see in that screenshot it is the same problem that i have, i recreated my workspace with the cacoa swt_fake.jar file, but i still have the same problem. In his topic he says that it would be better using the cacoa version of eclipse instead of the carbon, should i reinstall eclipse with the cacoa or do you think this wont make any sence?
edit: Ok for the moment i got everything working.
when i look at the code, everything is so new for me, are there any links or tutorials where functions are explained and what they do? I tried editing the file TestAdvanceVehiclePlus.java it's quite cool, and i've added some more boxes and spheres.
But the background is just BLACK how can i change that?
Read through the wiki and most important check out all the Test* classes of the jmetest package.
Almost every feature of jME is used in a Test, thats the best way to learn i think.
You will also find the Flagrush Tutorial in the jmetest package, which creates a small game in 8 'lessons'.
i can't find the full test of flagrush, only the lessons