From http://www.w3schools.com (Copyright Refsnes Data)
Step 1
Insert a text in the upper left corner of the Stage area. Do this by selecting the
text tool from
the left toolbar. Write some text in the "textarea".
Step 2
Select the arrow tool from the left toolbar. Click on the text once to select it.
Step 3
Convert the text to a symbol. From the top menu choose
Insert > Convert to Symbol. Name the symbol "text", choose graphic
from the Behavior list and select OK.
Step 4
Go to Frame 30 in the Timeline. Do this by clicking the gray field below 30. Then right click in this field. Choose Insert Keyframe. Keyframes
appear as circles in a frame.
Step 5
Click on the Timeline any place between Frame 1 and Frame 30. Then right
click and choose Create Motion Tween.
Step 6
Go back to Frame 30 in the Timeline. Move the text to the lower right corner.
Step 7
Make sure the text is selected. Choose Modify > Transform > Flip
Horizontal.
Step 8
Choose Control > Test Movie from the top menu to test your Flash movie.
The text should move from the first location (in frame 1) to the second location
(in frame 2). The text should also turn around on its way to the second
location.
From http://www.w3schools.com (Copyright Refsnes Data)