Architecture / Home Design Software?

shroudedmoon asks: "I'm looking for a solution to create a printable floor plan (line drawing) and 3D walkthrough of a house that I'm preparing to build. I've got a rough design on paper that I want to tweak on the screen, and then show to my architect/father so that he can create the finished and buildable blueprints. I've know there are consumer packages out there like 3D Home Architect from Broderbund, but I've heard that the graphics and navigation are less than spectacular. I also recall a Slashdot article, a couple of years ago, about the possibility of using the editor of one of the 3D shooters (Doom, maybe?) as an architectural tool, but I can't seem to locate it. Just curious if anyone out there has had any experience with anything similar, or which of the current 3D Shooters might have the best editor for something like this."