macromedia flash sitedesign: I Just like to know how to make play controls for video files

If you're playing the videos in one of the Media Display components, its pretty
easy, Just look int he Actionscript reference pane of the Actionscript panel
under the Media components, to see the available properties (play, stop, etc.).
Then create some buttons script them to do what you want!

Here's even a tutorial on Macromedia's site that might help:
http://www.macromedia.com/devnet/mx/flash/articles/media_behaviors.html

Good luck!