UltraISO is an ISO CD/DVD image file creating/editing/converting tool and a bootable CD/DVD maker , it can directly edit the CD/DVD image file and extract files and folders from it, as well as directly make ISO files from your CD/DVD-ROM or hard disk. At the same time, you can maintain the ISO bootable information, thus creating your own bootable CD/DVDs. You now have the power to make and edit your own ISO files, and then burn them to CD/DVD for your own needs.

Shareware

http://www.ezbsystems.com/ultraiso/