Inserting plug-ins from web page
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I'm wanting to provide a plug in from a web page. This is for the benefit of users who download files from the site which are PGP encrypted. The plug in needs to find their PGP stuff and decrypt incoming files fairly transparently. The initial web page should check to see if the plug-in is in place and, if not, offer to install it. These customers are required to use IE5 5 or above. Their PC setup is, I gather, fairly requlated. I suspect the appropriate kind of plug in is a mime type filter whick IE5 seems to support. I can see, in outline, what's needed and I've come accross tantalising scraps of information on MSDN but I really need some kind of overall guide to working this trick. I guess the approach will work through a java Applet which then asks for permission to access local files, intalls a DLL into the PLUGINS directory and then registers it, somehow with the system and with IE.