It's a nice balance of giving you more repair options while requiring some extra effort, and most of all, it makes you feel like a real DIY enthusiast. First make sure that you know the location of your Fallout: New Vegas. This can be used by using steam's built in delete feature.
Uninstall the game and any mods currently left behind. With Alternative Repairing, however, you can break down other existing items into base components, then combine those components into replacement parts for your gear. The best way to start modding your Fallout: New Vegas is to start fresh. How are you going to fix them? Traditionally, by finding identical versions of the broken items and cannibalizing them (or by paying a vendor to fix them for you). Your gun is broken, your knife is dull, and your armor is in tatters.
More detail usually means a performance hit, but there are three different levels of quality to choose from if you have issues running the biggest textures. Everything from roads, trees, buildings, vehicles, and other objects have been retextured (sky, water, characters, and weapons are untouched). There's a morbid sort of beauty in a decaying landscape, and the NMCS Texture Pack makes New Vegas even more bleakly attractive.