If you can go to the restaurant's site and find nutritional information, you can just plug that into your points calculator to figure out the number of points for a dish.
Suzanne the administrator said that section is being revamped since it had outdated info. I'm not sure when it will be finished.
To the original poster - if there is a specific restaurant you need points for, and Dotti's doesn't have it, you can check the specific website and see if they offer the nutritional info there.