How to trace HTTP messages in IE 7 when debugging ASP.Net application locally

I am trying to locate where my web application slow downs are.  I would like to see all HTTP messages that go back and forth including AJAX requests.  Are there any tools one could recommend to do this OR is there built in HTTP trace functions present in Visual Studio 2008, that I may not be aware of?

I tried Wireshark and could not get that to capture my packets.

I also tried tcpTrace and that did not work.
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Firebug for Firefox is a most excellent tool for this purpose.

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