Help with keyframes control

Hey guyz. I imported a swf created in After Effects to Flash CS3 to make it interactive. Flash broke the “swf” movie into a number of keyframes (apprx 65 keyframes) which when previewed, plays all the keyframes one by one. I want it to stop at first keyframe and have a button over there, which when clicked will let the next 30 keyframes run without stopping. Then stop at the 30th keyframe which will have another button to be clicked to proceed to the the next 34 keyframes without stop.
I have been trying the stop(), and gotoAndPlay nextFrame, but it stops at the next frame. Kindly help.
One more thing, do I need to convert all the imported keyframes to graphic or movieclip ?