Hi all, Can someone tell me is it possible or not to change the vertex type in Gambit ..if yes how???? thanks..

Jim

What do you mean vertex type? Do you mean Non real to real? There is an option in operation -> geometry -> vertex

Yes, it is possible (and sometimes very necessary to force Gambit into the correct direction).

Go the the Face-Mesh panel. One of the buttons is the 'Set face vertex' commands. It is the button with the four little meshes on it.