IT MAY NOT BE YOUR CUP OF REBEL Yell, but the liveliest awards show of the year is on this week. Showing up on Thursday to perform live at The MTV Video Music Awards (Sept. 5, 9 P.M. ET) will be Prince, Paula Abdul
, Van Halen, L.L. Cool J, Mariah Carey
, Poison, Queensryche, C + C Music Factory, Don Henley and, via satellite. EMF and Guns N' Roses. Some questions might be raised about the institutionalization of Arsenio Hall as host. (This is his fourth year.) Does he really strike anyone as a rock-and-roll animal? There are so many ebullient rock stars to choose from. To cite one, David Lee Roth's whole life has been one long rehearsal for a master of ceremonies gig like this.