Uh.. thanks for the reply.. but i am about to resign. For the last three hours i was snaping like hell in TCE, trying everything in can think of. But to no success.
Even the with the SL-Standard-cube no success. I wonder whether there is something else what could make this happen.
I here included the steps i made for the standard cube with the result. All looks, referring to the UV Map, great to me.
http://www.flickr.com/photos/29521483@N07/2807525331/
http://www.flickr.com/photos/29521483@N07/2807525435/
http://www.flickr.com/photos/29521483@N07/2808374482/
http://www.flickr.com/photos/29521483@N07/2807525613/
I am really about to give up.