Save as Corel Draw version 4

Hello,
I have Corel Draw X5 and I have one question if someone can help me. One of my clients needs file to be saved as Corel 4 version (not X4 but 4, old one I know ;-) )His engraving machine can import only Corel Draw 4 files!? Is there any way in X5 to save file as version 4?
Thanks in advance.