1.) Put a command line switch in your shortcut for Dom2. "-w" or alternatively you can go into the options and disable the fullscreen mode and it should start in windows mode from then on.

2.) This is called Quickhost, if you check the box when you are serving that has Host Schedule and just click Quickhost the turn won't go until all turns have been put in, then as soon as all turns are in, it will generate a new turn.