If you're running Ubuntu there is a neat way of installing all of your programms on a newly installed Ubuntu system. 
Run the following command on the 'old' Ubuntu installation.
"dpkg --get-selections > installed-software"

You'll end up with a file called installed-software. Copy the file to a usb key and copy it to a location on your backtrack machine.
Run: "dpkg --set-selections < installed-software" in the directory where you copied the file installed-software.
Finally the "sudo apt-get dselect-upgrade" commands completes all of this. Be aware that is might take while until the installtion finishes.

If the above doesn't work, you probably do not have dselect installed.
In that case, run "apt-get install deselect"
The above instructions also work on BackTrack 5. ;-)
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