Main files
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Oblivion INI, drop into /Documents/My Games/Oblivion/
Remember to backup your old .INI file, just right-click it, and copy it to your desktop, just in case.
HDR is enabled. -
Microsoft C++ Redistrib's
READ THE INSTRUCTIONS on Step 15 or in the Instructions file I have included, it isn't that hard and will only take a minute to do
Extract the folder 'Redistributables' to the Desktop.
All of these are from Microsoft's webs -
Download the original OBSR if you don't have it already.
Drop the folder into your game's main folder (DO NOT DROP THE DATA FOLDER INTO THE DATA FOLDER)