I discovered a very cool Flash web app recently.
First, see Jordans Roomplanner. It’s awesome because I can choose what type of room I want to design, it gives me a template to begin with. And most importantly, I can customize virtually any aspect of a room, including size and shape of furniture, etc.
The company behind this great system is called Icovia and they have an awesome site. I love the deep brown color used and the simple site design which is focused.