[Rich Coyle]

When the batter is hit by the ball, it is immediately dead -- regardless of situation.

Now, if the batter did not attempt to get hit - he's awarded first and runners forced to advance do so.

If the batter attempted to get hit, it's a ball or strike (as appropriate) the batter stays in the box (unless ball four or strike three) and runners advance only if forced (by the above being ball four).

If the batter is swinging at the pitch and gets hit, it's a strike and the runners stay.

Hope this helps.