How do I animate 3 or more images in a control array?

[Jim Friedley]

All I can get is two of the three images to change. Here what I have so far:
Private Sub Timer1_Timer()

static i as integer

i = i + 1
for i = 3 then i = 0
imgLight(0).Picture = imgLight(i).Picture
End Sub

As you can see I have a timer and an image array with three pictures, but only two will change. What do I need to do to get the third picture to change?