How can I create a Ubuntu liveCD to use from a USB flash drive?

I am trying to install Ubuntu on a 2 GB USB flash drive for my job.

I don't want to install Linux on my personal desktop, but it seems that Ubuntu requires me to that to in order to copy some specific files I need to create the USB livecd.

My job require Ubuntu and no other distribution. How can I create a Ubuntu liveCD to use from a USB flash drive, knowing that I only have a Mac running OS X Leopard on my personal desktop?

Answer

You can use UNetbootin to create a Live USB drive for any many Linux Distribution, including Ubuntu.