Brown-haired, green-eyed actor Wallace Langham has made a nice transition from the "kid next door" and menacing delinquent roles he used to play billed as Wally Ward. He showed the nicer side in his feature debut, John Hughes' "Weird Science" (1985), as well as in "The Invisible Kid" (1988) and the "ABC Afterschool Special" entitled "Just a Regular Kid: An AIDS Story" (1987) but was equally effective as a young bigot in "Soul Man" (1986) and a hard-edged gang leader in the impressive low-budgeter "The Chocolate War" (1988). Langham dropped the Ward moniker in the 1990s as he moved to more