How to draw in Microsoft word 2007?

In Microsoft word, how can you use a PC tablet to scribble on the page, as the only way i can think of is to use the draw function, however every time you take the pen off, it converts the line to an image, so u have to re-click on the draw tool for every stroke.

Is there a way of turning this off? So i can write freely with my PC tablet over the page?