Hello Meyer,
1. How can I set a vertical Header (TableHeader) on the left side? How can I set a left AND a top TableHeader?
Look at RowHeader example
here
2. How can I identify a Table Row? Is there a Way to set an ID per Row and read it out later? I'm not talking about hot to get the Row index (getSelectedRow())...
Not very sure, but my guess is that you will have to get/set those row ids in the vector/array etc where you put other data to be displayed in table.
HTH
Ashish