Stepping through jMonkeys Wiki i found i tried the HUD Tutorial first.
This is really good i think and i went through it and still doing.
My problem is, that transperincy, which should look like this:
looks for me like this:
I am still looking over it and also asked for help, but i dont get the mistake, maybe somebody of u can look it over and say me what i am doing wrong.
I posted the code on http://rafb.net/paste/results/OV3jtR63.html
Full wiki is found here http://www.jmonkeyengine.com/pmwiki/index.php?pagename=Tutorials.AddingTexturesAndTransparencyToTheHUD
Thx for ur time
Cream
Had a chat about this on the jME IRC channel ( #jME on irc.freenode.org). Turns out the image in the wiki does not actually have an alpha channel in it!
Look at the image name, it is "hudtutorial2texture-nontransparent.png". As explained in the text, I marked the areas which should be transparent, as green. Otherwise it would have been difficult to highlight them 
LLama already told me
so i managed this wiki in the middle of the night
i never made some transparent things before
i think it will work if i try another time