land F/X is a software that is used primarily for landscape architects and designers as an add-on to autocad. if you are not a landscape architect and do not use or need land F/X, there are plenty other ways to get files into sketchup like importing a pdf or Jpeg and drawing directly over the top of the plan. Make sure that you set your scale on the drawing before getting started but don’t worry if there isn’t a scale to the drawing – you can approximate one of the lengths inside the model. when you adjust the scale, you must make sure that the entire model is selected first. this will allow you to keep your model consistent.