Create data installation DVD for distribution

Hi, I have folders of data amounting to 17.5GB and am currently distributing them to people over several DVDs. What I would like to do is create an installation DVD (or 2 if need be) that would compress these folders into an installation file, which, when run, would prompt the user where they would like the folders saved to. Is where a way of doing this and how much could I reduce the 17.5GB by? Thanks in advance.

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