1. Drop the archive into <SteamApps>\common\Oblivion Mods\Installers\Bain Converters.
2. In Bain (Wrye Installer Tab) right-click the original mod (nONatees colored Shivering Isles map), select 'Conversion', then Apply, and select the BCF file.
3. Select your options and install.
Requirements: the original mod by nONatee: http://www.nexusmods.com/oblivion/mods/12797/