creating faces question

[moth]

I have a question about making new faces. Now, I usually use the middle mouse button and alt to move around my model. But, if when I am creating a new face, how can you still move around. Once I start selecting my vertex's if I go to move I lose the vertex's I already selected. I saw a video tut where the guy was doing just this. Can anyone help me out?

[Duncan]

Left click outside the model and then you can move around and not loose the points you already clicked.