This is all I could find:
"Dee Wallace-Stone, best known for her role in Steven Spielberg 's "E.T. The Extra-Terrestrial," will play Laci's mother, Sharon Rocha. Tim Quill, who was featured in Steven Bochco's pilot for Fox's "NYPD 2069," will play Laci's brother Brent. David Denman, who will next be seen in the features "The Big Fish" and "The Singing Detective," will play Tommy Vignatti, a close friend of both Laci and Scott."
http://tv.yahoo.com/news/va/20031029/106749622600.htmlI wonder if they could find someone hideous enough to play Jackie (although they can work miracles with make-up/latex)..skilled enough to portray her Wacky personality.