It works!!!
It works exactly like you say in the procedure JonB.

(With Explorer) I created another user name (keepdat) to test. I put a test data file (testdatafile.txt) in:
My Network Places
.....|
.....keepdat on SME Server
..........|
...........testdatafile.txt
I deleted testdatafile.txt and a Recycle Bin directory show up with testdatafile.txt in the Recycle Bin directory:
My Network Places
.....|
.....keepdat on SME Server
..........|
...........Recycle Bin
...............|
...............testdatafile.txt
Big Thanks to you guys!!! Especially Byte and JonB who lead me the solution.
You didn't save my life but you save my Weekend!!!
(It's the vacation time after all:

)