Basically, Ku Klux Klanettes. Began as a magazine of the same name in 1995, and eventually became an organization which "was started as a voice of the Proud White Women within the ranks of the Racialist struggle." They spout the usual Ku Klux Klan/Neo Nazi nonsense which I won't elaborate on here. They also have a website (assuming you can stomach both their hate and Blink tags on every page) at the all too obvious location www.sigrdrifa.com.
By the way, I don't know how to pronounce it, either.