Storing and reading PDF files on live CD

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http://askubuntu.com – I want to boot from live CD and use it without installing it. All I want to do is connect to the internet and read couple of PDF and word documents. Is it possible to write specific PDF files I want to read to live CD? I mean, after I boot of live CD I should be able to see PDF files. I don't want them saved to my hard disk on computer. I want to have all documents I want on live CD itself. Is this possible? (HowTos)