6,000 weekday viewers: now that's embarrassing. Somebody has to carry the can for the disastrous launch of Fox Business News, the News Corporation's cable channel. But not Roger Ailes, that's for sure. The Murdoch henchman's reputation as a media genius — built on the destruction of the Dukakis campaign and CNN's dominance of round-the-clock news — is too well cemented. What's the betting that Roger Ailes, an adept corporate infighter, will offer up sidekick Kevin McGee instead to assuage the wrath of Murdoch?