how can I expand on my current terrain and not just stretch it or make it bigger.

Hi I'm trying to expand my 500 x 500 terrain and add more blank/flat terrain around it but when I go to set resolution it just scales up/stretches my current one, and when I create a new terrain they act as 2 different terrains and don't correspond well on the edges, thanks.

Check this out: http://starscenesoftware.com/Utilities.html#Stitchscape