The final version of the IE Developer Toolbar has been released. Although this may not have quite everything that the developer toolbar does in Firefox, it is not bad. Specifically I like the way you select elements, can view the DOM, and see the styles applied (again yes I knew this was part of Firefox). By far the coolest feature I like is the Trace Style feature. After you select an element on the screen. Right click on any style and choose Trace Style. This will then take you to the exact place in the CSS where the style came from.
Go download it now. Chances are you will be using IE when developing something.
IE Developer Toolbar
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