Yes if you have an image sequence you load up the first frame and then on your F6 buttosn panel under the image tab you set it to sequence - I believe that the sequence plays at the FPS that you already have set for the animation.
There is a movie button as well as sequence but i have only heard of sequence working.
Hopefully someone with some actual experience will chime in - I just have studied several blender books and remember thsi is one way to do it.