How to extract files from vista dvd

Hello,
i had downloaded vista ultimate sp2 from the net ,and in the bootable dvd there are programs such as 7 zip, and adobephotoshop, i want to know how i can extract the setup files from the bootable dvd, and one more thing plz tell me a way how to extract vista sp2 files from the dvd. It would very helpful of you to give your answers as soon as possible.

Thanking you,
Joe