Regal Rents of El Segundo, Calif., has hired Sheri Fiset and Gregory Day as party directors, and Sheely Lopez and Michelle Sledge as sales assistants. Call 310/535-3660; Web site: www.regalrents.com. n Jennifer Madover has joined New York-based event planning company Matthew David as project manager. Call 212/627-2086; Web site: www.matthew davidevents.com. Simone Mets has joined Somerset, N.J.-based Flying Frog Productions as director of special events. Call 732/846-6880; e-mail: [email protected] After a three-year hiatus, Donna Sarno (for-merly Donna Cadis) has rejoined Extraordinary Events of Sherman Oaks, Calif., as event producer. Call 818/783-6112; Web site: www.extraordinary events.com. Charlotte, N.C.-based event management firm Tribble Creative Group (formerly Mary Tribble Creations) has hired Linda Libby as vice president of operations and Jonna Orwig as director of sales. Call 704/376-1943; Web site: www.tribblecreativegroup.com. Technical support services company Caribiner International of New York has appointed Robert Ellis chairman of the board and CEO and Digby Davies president and COO. Call 212/541-5300; Web site: www.caribiner.com. Event management company Nth Degree of Stone Mountain, Ga., has promoted Mark Metzler from director of trade show program development and management to executive vice president of sales. Mark Lively has been promoted from director of labor management and staffing to executive vice president, business development. Call 800/621-7233. Craig Ferrell has been named market manager-special events by Munters Moisture Control Services, Kent, Wash. Call 800/I-CAN-DRY (422-6379). Raleigh Studios of Hollywood, Calif., has hired Jane Holland as manager of special events for its Hollywood and Manhattan Beach, Calif., lots. Call 323/871-4430.