How to Customize the BT5?

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http://www.backtrack-linux.org – I only need BT5 boot up laptop, then run the dd and wine commands. Right now, BT5 is so big and most of it I don't need. The reason I choose BT5 is because it has the Forensic mode. Do other Linux version also have the Forensic mode? What I want to do is to delete most items on menu and also delete the execuation programs. And create a shortcut on desktop to run my simple script. How can I save all the change I made and create the ISO file from the customized BT5? (I need to distrubte it to several locations) Thanks (HowTos)