Older versions of PDF creator used to save the settings in Documents and Settings\USERNAME\Application Data\PDFCreator\PDFcreator.ini
Newer version are now storing this in the registry. I liked it much better in the INI as it made it a lot easier to set up multiple users on a terminal server. Could this become an option in the 0_9_3 or later version?
You can use the setup switch "/UseINI". But wait for 0.9.3. There was a little bug. The old INI-mode has some disadvantages. You can't use server based profiles!!!