I'm at work at the moment, and I'm not using my personal computer (which has WinBoard on it), bit if I remember correctly, change the TIME DELAY option in the winboard.ini file to be -1.
/timeDelay=-1
Any positive number will pause that number of seconds between moves.
A zero will immediately advance to the end of the game.
Any negative number will do want you want, and not start animating the game at all.
I have found Winboard 2 b a helpful and useful free program. But does anyone know how I can prevent it from running automatically after I paste game to clipboard? I want to go over the moves one at a time ala solitaire chess.