This is the story of a battle between an overbearing artificial intelligence, Vince, and his inventor, Graham. Vince lives inside the world's computers and soon becomes the planet's dominant species. He also decides to give himself the digital equivalent of a sex drive, and it's Graham's partner, Faith, whom he wants to sleep with, even though she's real and he's nothing more than a bunch of ones and zeros.
In terms of style, it's closer to Jurassic Park than to regular science fiction. It's also quite light-hearted, as any book about the sexual desires of an AI should be.