I am led to believe this is possible with ver 1.70 but I can find out how to do it. Any hints ?
Just do it -- while playing a file, the vertical scroll bar is now active, and you can move it up and down at will.
PS - you need to have the web service packs installed for this to work. Perhaps that's why your copy won't scroll.
http://www.noteworthysoftware.com/nwc170sp.htm