Are you dance-impaired? Envious of those nubile folks on MTV's "Global Groove?" Well, salvation is about to hit your local video store.On sale this week is "Go Fatima," an instructional videotape by pop choreographer Fatima, who has provided cool (or at least non-embarrassing) moves for stars ranging from Will Smith to the Backstreet Boys to singer Aaliyah. Now you, too, can learn to recreate the steps from such clips as BSB's "Everybody (Backstreet's Back)" and Aaliyah's "Are You That Somebody." (Horror-show makeup and bird of prey not included, of course.) "Go Fatima" arrives in stores on November 30.