[GRASSLIST:10743] How to extract polygons from vector map

[Michael Rensing]

I've got a vector map where I can visually identify one outline which is 
a lake. How can I extract that one vector from the layer and turn it 
into a filled blue polygon in a new layer?

You've all been a huge help to me so far, and I hope that the good will 
continues until I am able to contribute my own answers. If anyone is 
interested in what I'm up to, I've been keeping a sketchy blog at 
http://mjr42thoughts.blogspot.com/

Regards,
Michael