teleguy: I'm using the Steam version. Launching the game from Steam forces the -windowgui command line option or you can doubleclick jk.exe to run the game without -windowgui. In both cases dgvoodoo can make the game run in a window on my system but without -windowgui the mouse cursor is at the wrong position.
Edit: Remove the "Behavior" check marks on the DirectX tab and try Alt +Enter ingame.
Ok, I tried the -windowgui option in the shortcut, but now the window is stuck at 640x480, even though the resolution in both the patch launcher and in the game should be 1280x960. Is there something else I need to do to get the proper resolution? The video card is an nVidia.
Also, can you tell me which version is the JKII Steam version and is there a way I can figure out which version GOG is using?