ok, they are quite simple once you know how to do them.
For example, if you want to kick someone in the air, get above them and hit them back down heres the way to do it
get infront of them on the floor, in level with them. Float, kick them up and then hold jump down and press teleport about 5 times really fast. Then look down quickly and you'll see them coming up, so you swoop ontop of them.
If you want to see my 5 hit combo video, just pm with you AIM or MSN and il gladly send it to you, to give you the rough idea.