[Wine] No Fullscreen vs Virtual Desktop

[paulender]

hey there!
i'm trying to get Wine (wine-crossover-games) to work as fine as
the actual Crossover does. It plays games like Undying and Giants pretty well. Wine, however, does not work in Fullscreen. I installed via macports, everythings fresh. When I active the virtual desktop everythings fine, but w/o it, i'm presented with either a blank screen or errors like "could not start 3d device", "unable to initialize renderer". dxdiag won't even start, so i don't know about the d3d status. Any clues?