You want something like Wolron's code to select the correct anim sequence per letter. This can then be displayed as any other animated image. Viewports are entirely separate and is for the cameras : the area of the screen buffer to which 3D world is rendered.
To have the user type in, AND have these images animated, you will need a loop, and a variable to keep track of the current characters entered...
-Check for keypress and get key
-Add keypress character to current word
-Display Current word
-Animate Current Word
-Loop
To have the user type in, AND have these images animated, you will need a loop, and a variable to keep track of the current characters entered...
-Check for keypress and get key
-Add keypress character to current word
-Display Current word
-Animate Current Word
-Loop