title: what happens in the registry when installing with an MSI in Windows 7?
body: <p>When installing a program in Windows 7 (all windows versions would be awesome to know about...but Windows 7 will suffice for now) with an MSI...
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  <br/>-What &amp; where are the changes made in the registry on installation and how do all of those changes relate to one another?
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  <br/>-How can I find <strong>ALL</strong> of the data relating to a given installation should I ever need it, do I have to go through the registry to obtain this data or is there another more efficient or more appropriate way to access the data?</p>