I got the size of bluestacks to be 860*720, and the window is now smaller than it was when \I originally installed BS, as it should be. When I run bluestacks, though, the windows is small, as I want it to be, but the display is the same size as before, so I only get access to about a third of the screen.
Here is an image - http://imgur.com/sOvHwNV,y0aFs3D
Please help