Originally Posted by Valhalla

That's correct.

DW can only run in 1600x1200 if the monitor (and video card of course) supports a *vertical* resolution of equal or more than 1200 pixels. Now most if not all halfway modern video cards have no problem with such a resolution, but many laptops or even desktop displays are 16:9 with resolutions like 1920x1080 for example.

So if one has a 1920x1200 16:10 display (or anything larger), it can. Otherwise it can not.