1. As a computer-aided designer, the first step in satisfying the client's need for designing a house and lot is to understand the client's requirements and preferences. This may involve having a detailed discussion with the client to understand their needs, lifestyle, and design preferences. Once the requirements are clear, the designer can start creating a design plan that meets the client's needs and preferences.

2. In terms of computer applications, there are many options available for computer-aided design. Popular applications include AutoCAD, SketchUp, Revit, 3ds Max, and Rhino, among others. The choice of application depends on the designer's familiarity and expertise with the software, as well as the specific requirements of the project. For example, AutoCAD is commonly used for 2D drafting, while SketchUp is popular for 3D modeling and visualization. Revit is often used for building information modeling and can be useful for designing houses and lots with complex systems and structures.

Not sure if I'm right