The Windows Media Unicast Service is a Media Player 9 server service that provides streaming media across the Internet. If you are runnning a streaming media server then this service should be left on automatic. My guess is that this service allows point to point media streaming so that a user can get custom media streams instead of generic broadcasted streams. If you know the exact nature of this service then please contact me.
Please visit /tools/services/ for the complete Vernalex.com Services utility.
"The optimist proclaims that we live in the best of all possible worlds, and the pessimist fears this is true." --James Branch Cabell