It is possible to remove the scrollbar in the contact list (add a layoutpos=none in every definition (just to be safe

) in the very first element which should be the scrollbar), but I wouldn't recommend it, as not everyone has a mouse with a scroll wheel, and middle-clicking doesn't work in WLM.
As for the white line, this is controlled by a border. Go into pretty much any definition and search for "SimpleScrollbar". Change the borderthickness to rect(0,0,0,0);. You don't have to change the colour of the border unless you really want to (if you're removing it, it won't matter as nobody will see it anyway).
You must do this for all four of the scrollbar elements to be safe (again).
Hope this helps
