|On my computer, they are in c:\Program Files\Adobe\Adobe Premiere Pro 2.0\MediaIO\Presets\system |} My custom settings are at the first place, c:\documents and settings\your user name\application Data\Adobe\Premiere Pro\2.0\MediaIO\Presets Same thing for Adobe Media Encoder: C:\Documents and Settings\your user name\Application Data\Adobe\Premiere Pro\4.0\Presets The factory settings are at c:\Program Files\Adobe\Adobe Premiere Pro 2.0\MediaIO\Presets\system In Adobe CC: C:\Users\username\AppData\Roaming\Adobe\Common\AME\7.0\Presets