load the clip, then look for the icon that looks like a italisized clip. it is basically a sideways looking clip with lines behind it like it is moving. then you basically type in the percent to speed it up or slow it down. put a negative sign in front of it, if you want it to move backwards.
when i get to work tommorrow, i will be more precise. i am on the road 90% of the time with my new job.
email me if you want better instructions over the phone. i hate typing.