Storing data...no server connection

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I’m creating a kiosk for a tradeshow that people can walk by and use. The kiosk will be stored locally on that computer. At the end it asks for their name and email address. I need to somehow store that data somewhere, but I don’t think I’ll be able to have an internet connection where I can access a server. I know that you need access to some kind of database/php, asp…etc to write to a flat text file or an xml file, correct? I’ve also looked into sharedObject(), but am not sure if it can accomplish this. Does anybody know the best way that this can be accomplished? Thanks!