Welcome Maria
There isn't a sub-forum for Dukan, but the diet has come up in a few threads. http://forum.lowcarber.org/showthread.php?t=458765

My answer there is the same now, it is so like Stillman and other LCLF diets, you can use those tips...see the link in that thread.
You might also like Dr. Ted Naiman's take on a low carb diet. http://forum.lowcarber.org/showthread.php?t=479073
He and Dr Westman are certainly not low fat advocates, but to lose weight, you do not need to eat fats or oils above the minimum needed for satiety.

All the best