Does anyone know if you can make some sort of bookmark or placeholder using Flash MX for an interactive CD?

What they want is for you to be able to click a button where you last stopped on the CD, be able to take the CD out of the computer, put it back in and somehow get back to where you last left off on the CD.

I have been told it may be possible in Director or other programs but I have already built the thing in Flash.

Any Ideas?