How to convert synced photo folders to camera roll folders?

I currently sync ~3000 photos from my PC onto my iPhone 3GS. These photos are split into folders on my PC and these folders show up in the Photos app on my iPhone. However, these photos don't show up under the "Camera Roll". The iCloud Backups page states that iCloud backs up "Photos and video in the Camera Roll". http://www.apple.com/icloud/features/apps-books-backup.html I would like to make sure that all my photos get included in an iCloud backup - Is there any way to convert my synced folders so that all the pictures show up in my Camera Roll and the folders show up as regular Photo folders which I can add/delete on my iPhone? If not, is it possible to get my existing sync'd photos included in iCloud backups?