[shrek]

Wallpaper/Tiles work great now.
With arandr i saved my layout under ~/.screenlayout/my.sh, it contains the following:
#!/bin/sh
xrandr --output DisplayPort-0 --primary --mode 2560x1440 --pos 0x0 --rotate normal --output HDMI-A-0 --off --output DisplayPort-1 --off --output DisplayPort-2 --off

But this doesn't save my window positions. I have to manually place them after login.

Sorry for being lazy, but is it possible with arandr to arrange monitors? I also like to use DeskView on my Laptop and got two Monitors. Could i change the screen positions with arandr, so the monitor is on the left instead of right? [E] To answer my own question: Yes it works with arandr. [/E]
Also which program would be the one to set screensaver time and the like?

The icons were a problem with my permissions, i missed the -R on chmod -R a+rwx /opt/DeskView. It works now after changing permissions.

Thanks a lot so far

There is currently no support for saving open window states across sessions. It's technically possible with Motif since CDE can do it but I don't know how to get that working. There might be an API that the session/window managers can use eventually. Same goes for virtual workspaces. 

But you can configure geometry manually with xrm. Take a peek at the default entries in your ~/.toolboxrc or ~/.sessionetc. You can also use the xwininfo command to grab the geometry of any open window. The first two numbers (e.g. 118x158) set the length and height of the window, then the other two are offsets from the scree edges. The top left corner is always +0+0. You can also position windows relative to the bottom/right with negative numbers.

Screen savers and timeout can be set up with xscreensaver. I think I put a Toolbox entry under the Desktop menu. The daemon is not set up to auto-start yet but it should prompt you to launch it when you start xscreensaver.

DeskView is still very rough around the edges but I'm glad you like it. Happy hacking