No official start list, just a note from CN:
Wednesday's Dwars door Vlaanderen will be graced with the presence of more than a few stars, as riders get ready for the northern classics. World Champion Tom Boonen (Quick.Step) will be there, backed by a strong team, as will Alessandro Petacchi (Milram), who finished second in Milan-San Remo. Top sprinters Robbie McEwen (Davitamon-Lotto) and Thor Hushovd (Credit Agricole) will also be presented.
Update [2006-3-21 18:58:35 by chris]: Sarah supplies the start list link in the comments below...