The flipchart viewer is no longer available, but you could get students to download the free personal edition of ActivInspire.
For suggestions on how to lock the content, see http://community.prometheanplanet.com/en/technical_support/forums/f/152/p/18464/44176.aspx#44176
There is also the simple 'Export' option, which converts your flipchart to a word document, PDF etc.
David
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