I know this is a year old thread but I just found it as I was pounding my head against brick wall trying to figure out how to do the same thing. I got it done.
First, the Corel Auto-Preserve folders are hidden, so you have to remove the hidden attribute. To do that, open up a file window for the highest level directory that contains all your PSP photo files and the auto preserve folders you want to delete. In the file window do a search for Corel Auto-Protect. All the folders should show up. Select all the folders, right click on them and then click on Properties. Uncheck the hidden attribute and then click on OK. A dialog will pop up. Make sure the choice to apply to file and folders is selected and then click on OK. This removes the hidden attribute from all the directories. In the file window select all the folders, right click, and click on delete. They should all be gone in a flash!
