[rexico]

I have just got a creative blaster CD RW and I am looking to back up some of my CDs. i have been on the main cd copy world site, and I want to know whay DAO is? e.g:

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Installation:
There are two version of NFS3, an US and an EURO version.
When the NFS3.EXE file on the CD is 886947 bytes in size you got the EURO release. The US release is much bigger.

US Version:

Make a DAO CD-Copy.
Install the game to your HD.
Extract and Apply the archive (read the GCG.NFO file).
Play the Game!
EURO Version:

Make a DAO CD-Copy.
Install the game to your HD.
Replace the NFS3.EXE file with the one from the archive.
Play the Game!

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How do I backup the game. I have Nero 5.