http://bugs.winehq.org/show_bug.cgi?id=20301
--- Comment #12 from Rein Klazes wijn@online.nl 2009-10-16 01:10:12 --- Yes.
This key would have been created automatically if you had actually tried changing the graphic options "virtual desktop" or "allow window manager to control windows" in winecfg as I asked before. Try them, those options are there for a purpose: not playing nice with your window manager of choice.