DXF file for lasercut 5.3

Hi

   I am trying to use drawings from draftsight on a laser cutter that uses lasercut 5.3 software. Which of the options for saving a dxf file should I use? I am using windows XP to produce the files and the computer on the laser cutter uses windows 7. dxf files from other sources have been no problem.           

                                  Chris Wareing