I want to play it, but I'm affraid any download would a be virus :(.
They aren't viruses.
What is wrong with you people. He very clearly asked how to install maps.
I believe you need to move the mission files to wherever the default mission files are then move the textures to where they are specified in mission file. If I remember correctly the Kitchen and Backyard were default maps.
Kitchen and Backyard were defaults for RTB 1.045.
