Adding CSS3 Support To IE 6, 7 and 8 With CSS3 Pie
rsk writes "Internet Explorer 6, 7 and to some extent 8 have been the bane of every CSS-loving web developer for years. With the spreading adoption of CSS3's fancier rendering effects, like rounded edges, drop shadows and linear gradients, the frustration of needing to deal with IE compatibility is growing. 327 Creative's Jason Johnston has created the CSS3 Pie library to address this. CSS3 Pie adds support for CSS3's most popular rendering techniques to Internet Explorer 6, 7 and 8 by way of the IE-only CSS property 'behavior.' CSS3 Pie is open sourced under the Apache 2 license and can be accessed from its github repository."
If you were intelligent enough to know how to install CSS3 Pie*, you wouldn't even use IE.
*not exactly "install" per se seeing as it's a library, not an application but you know what I mean. Hopefully.
You seem to have misunderstood what this is about... The end-user doesn't install anything. The .htc resides on the server and it's the developer who includes the library and makes it work.
To be fair, however, CSS3 Pie isn't something that you should actually use, considering that it slows down the browser massively and it just adds the ability to display useless visual cruft.
This library, on the other hand, is several orders of magnitude more useful (and I'm dead serious about it): http://code.google.com/p/ie7-js/