From darkorb? As far as I know this is on the agenda though that agenda may stretch for years and/or decades. We're (powersurge) is working on a specialized release of something along these lines for windows 2000 servers currently..... probably will be available late next month or sometime in May.
It's definitely a whole different ballgame- developing something similar to Cpanel on a win2k/IIS box..... but it's definitely got promise with the advancements Microsoft is &attempting&, in the realm of .NET and things of that nature. Notice I said attempting.
:p