To make a preview?

I don't know how to make a preview of a video when I add one video.
Somebody could explain me?
Thanks

This is exactly what you need and what you was looking for:
http://www.facialforum.net/showthread.php?t=25167
:)

Many thanks!!

Just wanted to say thanks as well....been slacking off on learning how to do this - got the program and it works well. ;)

Thanks!