If you are a modder or game developer working with 3D models, you may need to import OBJ files into Nifskope for editing and modification. Here's a step-by-step guide to help you with the process:

1. Install Nifskope: First, make sure you have Nifskope installed on your computer. You can download it from the official Nifskope website or from trusted sources.

2. Open Nifskope: Launch Nifskope on your computer. The interface may look intimidating at first, but it's a powerful tool for working with 3D models.

3. Import OBJ File: Go to the 'File' menu and select 'Import.' Navigate to the location of your OBJ file and select it. Nifskope will then import the OBJ file into the program.

4. Adjust Settings: Depending on the complexity of your OBJ file, you may need to adjust the import settings to ensure that the model looks correct in Nifskope. This may include adjusting materials, textures, and other properties.

5. Edit and Modify: Once the OBJ file is imported, you can start editing and modifying the 3D model in Nifskope. This may include making changes to the mesh, textures, UV mapping, and more.

6. Export Changes: After making the desired changes to the 3D model, you can export it from Nifskope in the desired format. This could be in NIF format for use in games or other 3D software.

7. Test the Model: Before finalizing your work, it's always a good idea to test the model in the intended environment (such as a game engine) to ensure that everything looks and behaves as expected.

By following these steps, you can successfully import OBJ files into Nifskope and work with 3D models for modding and game development. Keep in mind that Nifskope is a powerful tool with many advanced features, so it may take some time to fully grasp its capabilities. However, with practice and experimentation, you can unlock its full potential for your projects.