[GRASS-user] Blank window in MS-Windows GRASS 6.3.0

[Matt]

I've installed the MS-Windows version 6.3.0 on a Vista machine along
with the NC datafiles.  When I start GRASS (as administrator)  from
the icon on the desktop a small window titled GRASS 6.3.0 opens
followed by a GRASS 6.3.0 Startup window.   The startup window shows
the NC dataset which I highlight and click the "Enter GRASS" button.
Now there are four windows open: "Tk GRASS6.3.0 GIS Manager -
North-Carolina PERMANENT", "Tk Map Display 1", "Tk Output-GIS.m", and
the "GRASS6.3.0" window.  The "GRASS6.3.0" window is black, has a
flashing white underscore cursor and does nothing.  The other windows
appear to work properly and I am able to successfully do a few
examples.

What is the "GRASS6.3.0" window for?  I am unable to type commands in
it.  It never displays any output.  It just sits there and mocks me.