Agent Malebranche is quite correct in his suggestion.
I should however make you aware that if you are not an active member of the Church of Satan
in good standing, and probably also personal acquaintances or friends with a Priest willing to perform the ceremony, I wouldn't start making wedding plans just yet. Weddings are not a "must do" function of the Priesthood as they are in many other religions, and the role of officiator is one that a Priest will only take if he wants to.
Of course, there are plenty of other options available to you. I've considered everything from a traditional Hawaiian wedding to a shotgun wedding. Also, Caesar's Palace does great weddings, in fact you can have Caesar himself officiate the wedding if you like.
At any rate, good luck with any plans you can enact.
Oh yeah, don't forget to make an introduction.