If you are looking for the steps to protect a Microsoft® PowerPoint 2010 presentation file from being modified on a Windows® Vista-based PC, all you need to do is just call iYogi at 1-877-524-9644 if you are calling from the US or Canada. But, in case, you are calling from the UK, call us on 0-800-635-0761 and our tech support team can give you the steps for doing just that. Take note of the fact that protecting your presentations not only keeps it from being changed by someone but it also helps protect them from being stolen and used by someone else.
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