Resizing an eps file.

[barrie.jo]

I am trying learn how to resize eps files in Gimp. I downloaded an eps file described as "a vector in EPS format" Since the file has an eps suffix I assume it is a real eps file. I selected the scale tool and path option but the cursor included a small circle with oblique line which suggests I did something wrong. There was no reaction when the cursor was dragged over the image. Will someone please help.