Hello and welcome to the forum,
Can you explain a little bit more? A powerpoint slide will be imported as one movie into Captivate. If you want to sync, animate in Captivate it is a much better idea only to import background graphics and to add text, images,... in Captivate itself so that they show up as individual objects that can be manipulated, timed, effects applied to them etc.
Thank you. You answered what I need to know. I had assumed it was easier to add the individual objects in Captivate, but am new to the software and just wanted to make sure I wasn't missing anything.