Info on a couple of IE plugins that I find useful:
First, I couldn’t live without the Internet Explorer Developer Toolbar. It is a collection of useful little tool for all kinds of web page development, free from Microsoft. Great for digging into the workings (or failings) of a web page. Follow the link for more information:
Second, the Web Development Helper useful. It was written by independent developer,Nikhil Kothari, and is also free. Not as useful as the Microsoft one, but still handy to have around. Its strength is its ability to log the traffic between the browser and the server: good if you want to know what a form is sending to the server, or what a server is sending back.