I assume that the second monitor is completely operational...
1. Is it set to "clone" mode or "extended desktop" mode in Windows? (It should be "extended")
2. When you press "identify" in the display settings in Windows, does the secondary light up with a "2"? (If you cant get this, ZW will never work)
3. Does the secondary monitor work if you drag a window from the primary screen over to the secondary?
I dont mean to assume that you are ignorant of how dual screens work, but I have to check.
-- worship is an active, deliberate, and rewarding act of love...just being there is not enough