Got it to work. I went to Add New Location, http://yowindow.com/add_location.php
And then pasted in the geoname ID# into my own Yowindow.
Did this for several locations and it worked. Then tried the database list again, and it worked. Also, I found that some names won't come up if you give it too much info. ie- "Denver" will bring up a selection of correct possibilities. But Denver, Colorado, USA wont bring anything up.
Hope that helps anyone else with same problem.
It's raining here, and we had thunder and lightening earlier today- not typical of my location. Hope you're enjoying your own weather.