http://www.linksys.com/products/display.asp?conmap=089wet11cmdiagram.jpg&prid=432&grid=22

The picture in the link above certainly suggests the WET11 is a bridge, but the diagram shows it bridging to a Linksys AP.

Do cheapest / neatest option for me would be if I could get one WET11, and HUB, and then use it to bridge to my existing AP.