Finally, FiNaLlY, FINALLY, F-I-N-A-L-L-Y the Win-Key does what I want it to do!
I installed SuSe 9.1 with KDE 3.2.1... and when I hit the Win-Key the KDE-Menu pops up in the lower left corner of the screen!
I've been trying to make my KDE do exactly that since 2.0 - and now, FINALLY, it works - without me having to do anything!
Now all I need is a shop that sells Tux-Keys for black notebook keyboards