I imagine that this would be very easy in a gadget, but also very easy from the normal toolset.
If you really want to automate this, I could make a Windows GUI stand-alone program that outputs CSV information that when loaded defines the vectors. Or a gadget like you suggest.
gracie dot rowntree @ gmail dot com
WarpDriver, StandingWave, Topo and gadgets available at PaulRowntree.weebly.com