Boundary problems

hi all

im using the blur scroller by www.oringe.com and i am loading this into a mc as an external swf, the problem im having is that the scroller will scale to the size on the page/screen and i dont want it to. how can i conatin it to a certain size area, if i mask it that will only show as much as i want it to but still messes up the scrolling.

this is all because i dont want to have the list scrolling the full lenght of my page i only want it to say be in an area of 500 in lenght so really my question is how do i contain something into a certain size area on screen when loading from an external swf

thanks in advance