You can use any numeric or vector drawing package to prepare your file.
Some common software packages are Adobe Illustrator, AutoCAD, PTC Creo, Solidworks, and Inkscape (free)
The laser cutter apears to the software as a printer that can both engrave rastered images and cut vectors.
Width of lines to be cut should be 0.001 and all other text and pictures will be engraved.
Saving your final artwork to a PDF provides consistancy for the laser operator who may not be familiar
with the drawing package you used.