I am looking for some way to elegantly inspect XmlHttpRequests in IE8. I wouldn't mind a plugin or an external program. I have yet to find anything that works nearly as well as Firebug.
I have already tried Julien Couvreur's bookmark debugger, but it did not seem to work with Prototype. Julien's Script
Fiddler is the main tool for Request Response Debuggin in IE... ( FireBug in FireFox )