Scripted curve movements

Have been trying to script curved movement whereby a random point is chosen on the stage and a mc (movie clip) moves towards it following a curved path
played around a bit and found that i couldnt quite grasp the math since it has been an age since i looked worked with my geometry
is there a tutorial i havent looked at or a site where i can find some reference material on the math behind this kind of move ment
would aprreciate the help a great deal

Thanks