ok I am going to teach you how to make animating movie clips out of sprites.

Sprites are game characters that you can download free from various sites

this is the one I will be using:

http://sprites.fireball20xl.com/NSA/Sheets/smsmario.gif

ok so first thing is to load up flash

next go to file > import > import to library

find where you downloaded the sprite and click on it

it should now appear in your library now go to insert > new symbol or control + F8 and call it anything

now you will notice that there's a cross in the middle on your screen you can now edit the symbol.

(it should look something like this)

now drag your image that you imported into your library to the workspace with the cross on it

(this is what mine looks like)

now go to modify > bitmap > trace bitmap

and put in these settings

and hit ok

all that's done is split it up so section becomes an image

if yours has got a different background than you would like click on it and press delete

now delete all the other segments of the image you don't want until your left with the ones you do.

this is what I got

now cut all the ones except the first and put that on the crosshair like so:

now go to insert blank key frame and then edit > paste to get the ones you cut back

and then cut everything but the first and continue doing this until you have no more left.

It would be a good idea to turn on onion skinning so you can see what the previous frames look like

ok so you now have all your frames done for that sprite so now click back on the scene 1 button and drag your movie clip onto your workspace in the centre and you've finished the sprite.

now go to about frame 20 and press insert new key frame click back on frame one and move the sprite to where you want it to come in from and then click on frame 20 and move it to where you want it to leave from and right click and press create motion tween

That's it you have finished

here is what I got: