2samsung: Thank you for the nice comments
I´ve already sent the renderings to the design showcase, I don´t know when is the next round ... I didn´t get your question about the background picture - I´ve rendered the building with white background and matched with the photo in photoshop - soften edges, erase parts with objects in front/behind the building and enhanced some details (reflection in water, facades, etc.). I can´t say a lot about the LW rendering settings in archicad - as I said, I had no time to learn any methods, so I´ve just guessed. I made it on a slow laptop (P4 1,6GHz, 256Mb RAM) , so I couldn´t have experimented so much. I also had problems with matching the desired color, the laptop´s lcd and the printer.