How to use .scr file in Eagle?

For the board outline,I have converted .dxf file to .scr using Eagle PCB power tools. While converting this there was a warning like" The coordinates are out of range of Eagle.This can cause an incomplete import into Eagle. Please check your adjustment of scaling factor and unit. ". And the .scr file got created. But I don’t how to use this in the board. I tried to open the .scr by File-Script. But nothing was imported into the board. I’m new to eagle. I don’t know how to use the .scr files. Plz help me!! Thanks!!!