Overview: Miami-based quartet Nuclear Valdez, and Welsh rockers the Alarm are featured in this edition of ""MTV Unplugged."" Alarm band members Mike Peters (vocals/guitar), Dave Sharp (guitar), and Eddie MacDonald (bass/vocals) perform ""Change,"" and ""One Step Closer To Home,"" which the band dedicates to ""all the people of Eastern Europe."" Nuclear Valdez showcase their rich Latin Heritage with renditions of ""Summer"" and the Phil Lynott song ""Don't Believe A Word."" An excerpt from the MTV Unplugged book...""One of our greatest regrets is that this show did not turn out as it should have. The day before the taping, Alarm singer Mike Peters was called back to London for a family emergency. Because the show must go on, guitarist Dave Sharp-accompanied only by the group's drummer, Nigel Twist-filled in admirably. If the Alarm hadn't been such a terrific, underappreciated band, this would have merely been a show that got away."" Set List: Change [Sharp/Twist] My Land, Your Land [Sharp/Twist] One St