How to use the .mxp extentions in DW?

Ok.. For example I Downloaded Srollomat extention plugin thingy... and this what it tells me about it:

"Another member of the "scroll a layer family." The code has been taken from the old Yaromat home page. This tool makes it pretty easy to create scrolling regions. With this
tool you can:
* clip the layer's visible region
* loop the scrolling
* scroll relative to any point in the x and y directions
* force a scroll interruption using the Stop the scrolling with the Stop
Layer Animation behavior.

Access from the Behaviors Floater. (The Yaromat submenu)"



Ok.. My question is how to I get to use this? What do I have to do to make it work? What do I draw or make on the page so that I can use this Behavior?

Any help would be great. Thanks
DD

you'll have to download macromedia's extension manager for DW.... Go to macromedias website