Hay Wulfy93 You first should extract it. Then you copy the Meshes, Textures and .esp-Files and Folders to you C:\Programs(x84)\Bethesda Softworks\Oblivion\Data Directory (Hope the path is correct, if not, open C:\ and search for Oblivion). If there is a Sound folder, too, copy it together with the others.
725 comments
Also, which file should I download/is the most updated version?
You first should extract it. Then you copy the Meshes, Textures and .esp-Files and Folders to you C:\Programs(x84)\Bethesda Softworks\Oblivion\Data Directory (Hope the path is correct, if not, open C:\ and search for Oblivion). If there is a Sound folder, too, copy it together with the others.