Elder Scrolls IV: Oblivion Oblivion Script Extender - OBSE v.0021

Description
The Oblivion Script Extender, or OBSE for short, is a modder's resource that expands the scripting capabilities of Oblivion. It doesn't make any modifications to oblivion.exe, TESConstructionSet.exe, or any other files in your oblivion install, so don't worry about permanent side effects. It is compatible with the 1.2.0.416 Oblivion patch, as well as the 1.2 version of the Construction Set. Versions of Oblivion downloaded via Steam are supported as well.
Installation:
Retail (Non-Steam) version
1. Copy obse_1_2_416.dll, obse_editor_1_2.dll, and obse_loader.exe to your Oblivion directory. This is usually in your Program Files folder, and should contain files called "Oblivion.exe" and "OblivionLauncher.exe".
2. Run oblivion by running obse_loader.exe from the Oblivion directory.

If you use a desktop shortcut to launch Oblivion normally, just update the shortcut to point to obse_loader.exe instead of oblivion.exe.

Steam version
1. Copy obse_1_2_416.dll, obse_editor_1_2.dll, and obse_steam_loader.dll to your Oblivion directory. This is usually "C:Program FilesValveSteamSteamAppscommonoblivion".
2. Ensure you have enabled the Steam community in-game, or OBSE will fail to load. Go to Steam > Settings > In-Game and check the box marked "Enable Steam Overlay".
3. Launch Oblivion via Steam or by running Oblivion.exe. OBSE will automatically be run along with Oblivion when launched. To disable this, rename or move obse_steam_loader.dll. You do not need to use obse_loader.exe unless you are running the editor.