When cycling through the viewmodes (via toolbar-button), Powermodus will always be ignored (choosing manually is ok). Also cycling-order is not from "up-to-down" (1-2-3-4-7-6; 5 is ignored Powermodus).
Talking about German Version!
Anyway DO runs fine - never Vista-Explorer again 
The cycle button in the Opus 9 out-of-box configuration intentionally does not include Power Mode. This change was made to help new users migrating from Windows Explorer to better acclimate to Directory Opus--Power Mode tends to confuse new users. To change the behavior of the cycle button, edit it in Customize mode and change its arguments to create your own a custom cycle button.
So for example, if this was the command for your Cycle button:
Set VIEW=Cycle,Thumbnails,Tiles,LargeIcons,DetailsOpus will cycle through only the view modes listed, in the order they are listed. The cycle button skips missing or unsupported view modes. (Some modes are not supported in some Windows namespaces). This allow users to customize their own Cycle buttons with only the view modes they really use, and allows them to set the order they find most useful.
Also, you can change the order in which the View Modes are listed in the Cycle menu-button pull-down, by dragging them up or down the menu in Customize mode.
Thanks for reply. It's late, configuring and testing DOpus for 6 hours - forgot, that I can customize cycling 
I have two more questions, maybe you can help, too:
I can't change the color of my status bar (Vista). BG is always black, Font white.
When using a Drivebutton with "offline"-option and the drive is off, the button next to it don't show the seperator when set "new group" (don't know English phrase).
Turn off Prefs - Display - Colors & Fonts - Other Colors - Status bar: Use system colors.
Not sure about that one, sorry.
Statusbar: That's what I did - but turning off does have no effect!
Oh, you probably have the glass status bar option turned on. Type "glass" into the Filter field at the bottom of the Prefs dialog.
Top, thanks!
Maybe I should stop for today - I'm too tired (it's 2:40 night here, sitting over 6 hours in front of DO)