Wow... some community they have here. This post has been here for nearly 2 month with no reply.
paulo973, I hope you haven't given up yet and figured out how to import and use textures. I had the same question you had but, it looks like there is not much community support for the software on this forum.... yet. Here is a pretty good guide I found on the website:
http://www.sweethome3d.com/personalized ... sGuide.pdf Even though it looses a little in the French to English translation it helped me figure out how to copy a jpg picture from the web and import it into the floor plan but, I can't seem to place it where I want it but, I'm on the verge of figuring it out. I'm currently working on floor and ceiling textures for a living area that I'm going to remodel. If I figure it out I'll let you know.
As for you "Sweet Home 3D Guru's", shame on you for not helping! [X-(]
Nu