I have read quite a few things about the Google Chrome OS notebook, the cr-48, from people decrying that you can't get to files, etc. That's not entirely true.
Two ways that I know of are to enable developer mode by peeling back the sticker by the battery connection in the battery compartment, and switching that little switch toward the connector, then turning on the notebook, at the funky notebook-face graphic you hit CTRL-d and wait 5 minutes. Then after you have logged back in and re-synced, you can access a shell.
To do that, all you need to do is press CTRL-ALT-t. Then you are in the chrosh shell, which I can't find much use for, so I just type "shell" to get to a regular bash shell. At this point you are in a light-weight Linux.
Now, using regular 'ix commands, we can create a directory where we can use it, copy your files into it, and do what you will from there.