flash (macromedia): You don't save it as a movieclip -- you save it as a movie and then load it
into a movieclip (with another movie), using loadMovie(). See loadMovie() in
the actionscript reference and/or the help files.

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Reality will not be altered to comply with preconceived notions.

Byron "Barn" Canfield
Flash example files: http://www.canfieldstudios.com

Barn's suggestion is correct and has some advantages. Another thing you can
do is open your movie and add a new empty layer above all the other layers. On
that new empty layer, draw a rectangle or a square (or anything else you want)
and make sure it is centered on the stage. Make that thing you just drew a
movie clip. Now, select every frame/layer in your entire movie EXCEPT that
frame/layer with the newly created movie clip. With all the other frames
selected, right click the mouse (or <ctrl><alt><c>) and choose copy frames or
cut frames. Double click on that new movie clip in the top layer to edit it.
Click the mouse on the frame in the timeline and right click the mouse and
paste frames (or <ctrl><alt><v>). This will place all your movie into the movie
clip while preserving the layer structure. Now you can copy this movie clip to
other movies or place it in a shared library.