With her distinctive voice, ultra-intense eyes and statuesque frame, Peta Wilson probably could have carried her breakout television show, "La Femme Nikita," on looks alone. Such was television in 1997. But when viewers realized that this killer- with-a-killer body could actually act, the show became the highest-rated drama on cable. Indeed "La Femme Nikita" was yet more proof that an inexpensively produced series could bypass the traditional TV networks and still make lots of money if it had so