an application like APTonCD

There is an application APTonCD that seems to do what you want, available on all releases up to natty.

https://launchpad.net/ubuntu/+source/aptoncd

So maybe your search failed because of a typo error in the name (0 instead of O)?

i install this, it backup but fail to reinstall packages. may be it is a bugs

Just copy the debs from /var/cache/apt/archive

You can then copy the debs to other systems and install then to update. If you put them in the same place on the destination system, the OS will not redownload them as they are already available.

If you write "...it backup but fail to reinstall packages..." what is exactly happening when you try to install a package on your frined's computer?
Any error messages?

i create a cd but aptoncd not show the packages, then i create a iso file but nothing is happen

no error message, it is show nothing

It uses the deb files in /var/cache/apt/archive so if you recently claned them out it will have nothing to work with and you will need to tell apt-get to download the files again

every packages are backup successfully, but reinstalling not show any packages even in my computer, but i show the cd & iso have all packages.

yes i am using ubuntu 10.10. How to install hal package, can you give me the command because it not found in software center .

To install hal from the command line, open a Terminal window (Applications > Accessories > Terminal) and run the following two commands. To run a command, paste it in (or type it in) and then press enter. One or both of them might prompt you for your password; while you're typing it, it's OK that you don't see any placeholder characters (like *).

sudo apt-get update
sudo apt-get install hal

Thanks Laudeci Oliveira, that solved my question.