Dark-haired, striking and statuesque, actress Michelle Forbes has displayed her ability to easily adapt to both abrasive and soft characters. She is best recalled as the cutthroat, foul-mouthed, unyielding producer Dawn Lockard who nevertheless tries to teach a young assistant the ropes in "Swimming With Sharks" (1994). Forbes had first gained notice with her dual role of troubled twins Sonni and Solida on the CBS daytime drama "Guiding Light" (1987-89), earing a Daytime Emmy nomination for her performance. Relocating to L.A., she went on to appear on primetime TV in episodes of "Shannon" and