Extract Iso

I'm not quite sure how you mean "extract" from your sentence, so I'll include both explanations.

- If you already have the ISO image created from a CD and want to be able to browse the contents of it, simply double-click the ISO image name. OS X will mount the image just like a CD or .dmg file you would download.

- If you have a CD and want to make an ISO image:
-- Insert the CD/DVD.
-- Open "Disk Utility" (it's in the Utilities subfolder of the Applications folder).
-- Select the mounted CD (it's usually listed just under the drive's device name, as "xxx.xx MB Untitled 0" or "xxx.xx MB DoctorWho 0").
-- Go to "File" > "New" > "Disk Image from disk1s0 (xxxxx)..." (this may look slightly different on your machine).
-- Select a file name and location, and select "DVD/CD master" as the "Image Format", with no encryption.
-- The file will be created with a .cdr file extension, but it is an ISO image. If you change the extension to .iso, it will function exactly as the ISO images you've downloaded in the past.


 MacBook C2D 2.0GHz;  Mac mini G4 1.42GHz; 2 Intel-based Windows notebooks Mac OS X (10.4.8)

mount the iso by double clicking, copy entire contents of the iso file to a new folder, edit the files you need to edit. to recompile the iso, first use disk utility to create a new disk image (in dmg format). where it says size, change it to the 660mb (80 min), then create the image. add all desired contents to the new image, then follow these instructions to convert it to iso: http://www.macosxhints.com/article.php?story=20040121135301830