Robin Dunne, Emily Corrie, Chris Engen, Adrienne Wilkinson, Derek Hughs, Tracie Thoms

By JILL FEIWELL

The cast is set for the frosh UPN dramedy "As If…," based on the British skein of the same name. Canuck actor Robin Dunne (USA telepic "Class Warfare"), Emily Corrie (U.K.'s "As If…"), Chris Engen ("Felicity"), Adrienne Wilkinson ("Xena: Warrior Princess") and newcomers Derek Hughs and Tracie Thoms have signed on to topline. Show, which follows the trials and tribulations of six young urban adults, preems March 5.