Manny Acta, manager of the Dominican Republic WBC team, has set his pitchers for the first round (link in Spanish).
Game 1 against Venezuela - Bartolo Colon and Miguel Batista
Game 2 against Italy - Odalis Perez and Jorge Sosa
Game 3 against Australia - Daniel Cabrera and Francisco Liriano
Two pitchers are listed for each game because of the pitch count limits.
The article also states that Armando Benitez of the Giants isn't going to pitch in the WBC, which I hadn't seen reported elsewhere. (And I look for this sort of stuff.) There are plenty of relievers on the Dominican Republic roster however to make up for the loss of Benitez and Francisco Cordero.