I just ran across a fantastic step-by-step walkthrough of how to manage IIS7 remotely from Windows Vista, written by Dave Lawlor over at Train Signal Training. Check out this article: http://www.trainsignaltraining.com/iis-7-remote-administration/2008-06-11/.  There is also an article on IIS.NET which gives a pretty good overview of how to setup Remote Administration and Delegation.  By the way, the remote administration tool also works great on Windows XP and Windows 2003!

I also ran across this great video posted on Channel9 by Drew Robbins showing off the new IIS7 Admin Extensions - all of which will work remotely once you've got the setup described above!