I want to edit my site in a live view sort of say. Like I'd like to take the CS5 "Live View" and edit it. So I can see the template the way it will look on my site live.
There's also Visual Web Developer (free from Microsoft). It's more ASP.Net oriented, but you can still do CSS and HTML and view them live in a design view and in a browser. http://www.microsoft.com/express/Web/
I have done the same thing.. Used Firebug to inspect the element, then make live tweaks to the css to get it the way I want it, and then go into the ACP and make the changed there for a permanent solution.