Make a keyframe. Insert your graphic, make it into a symbol.

Put another keyframe about 20 frames down on the same layer. You'll see a grey area inbetween the two keyframes and your symbol will remain in static position throughout.

Goto the first keyframe and make a motion tween.

Go to the last keyframe (20) and move the symbol where you want it to end up.

Test movie.

Rejoice.

Have a beer.

Mess around with flash some more.

Hope this helps!

-fishee