Pre-loading scroller

I’m a bit frustrated about this.

On a few rather cliche’d flash sites, the loading process is preceded by a scrolling bar in which the percentage of loaded bytes or frames is shown. Idiot me, I took a college friend’s advice when he told me it was easy.

Long story short: instead of making a new % scroller for every file/movie I make (and want to display separately), could I make a scroller as it’s own movie and simply import it from a library? (Dumb question, I know, but I’m the kinda guy who’d prefer Perl over PHP.)