Modern Satanist groups (those which appeared after the 1960s) are widely diverse, but two major trends which can be seen are Theistic Satanism and Atheistic Satanism. Theistic Satanists venerate Satan as a supernatural deity.
==Atheists, btw, don’t worship Satan.
I don’t know about worshipping Satan, but there are indeed Satanic atheists:
`In contrast, Atheistic Satanists[1] consider themselves atheists and regard Satan as merely symbolic of certain human traits. This categorization of Satanism (which could be categorized in other ways, for example “Traditional” versus “Modern”), is not necessarily adopted by Satanists themselves, who usually would not specify which type of Satanism they adhere to. Some Satanists believe in God in the sense of a Prime Mover but, like Atheistic Satanists, still worship themselves, due to the Deist belief that God plays no part in mortal lives.`
http://en.wikipedia.org/wiki/Satanism
Ooops, sorry ZC...my last was meant for Ari-Freedom.
Congratulations, you have established that even Satanic atheists don't worship Satan.
Did you mean to do that?