What you suggested made lots of sense to me, due to the fact that the "dings" seemed to indicate that ProSeries wanted something from me other than things like resizing or maximizing the tiny window, clicking on the Title Bar or anywhere else within the window continued to cause it to ding.  Changing resolutions and using Alt-Tab revealed nothing.  Then, in an act of desperation, I tried grabbing the Title Bar and moving the Window to a different part of the screen...it didn't move a bit, but when I let go of the mouse button a new window popped up informing me of new columns added by ProSeries to the HomeBase View (as though I cared).  When I closed that new window, ProSeries started behaving correctly, so thanks for the help!!!