You can save transparency flattener presets in a separate file, making it easy to back them up or to make them available to service providers, clients, or others in your workgroup. Once you create a custom flattener preset, you can edit it in PDF Optimizer.
Flattener presets are stored in the same location as printer settings files:
\Documents and Settings\[current user]\Application Data\Adobe\Acrobat\8.0\Preferences
Users/[current user]/Library/Preferences/Acrobat/8.0
on
the Print Production toolbar.