Animating in assembly language for x86

Im working on an animation project with assembly language for x86 processors. In order to slow down the animation itself I originally used delay loops, something like this:
   
    MOV CX,70
xx: PUSH CX
    MOV  CX,0FFFFH
x:  LOOP x
    POP  CX
    LOOP xx

The problem with that kind of loops is that the delay time varies a lot on different computers and I need the animation to run at the same speed everywhere. Im a total n00b regarding assembly language so I would appreciate any suggestions you guys might have.

I find any mention of "black voodoo" in this thread completely amusing. It's not like anything at all is a particularly dark art when you're looking up from the assembly level...