Does your laptop have Win98 or some other windows, or just DOS? If it has a version of windows, maybe you could use a wireless network to transfer, or one of those USB memory things, and then just boot back to DOS to run the machine.
As for ACE, it's a bit finicky. Make sure you only have lines and arcs in your drawing. NO polylines, splines, ....Lines and Arcs ONLY. That should help a little. I have an AutoCAD macro that will write g-code better than ACE (I think), but it will do Polylines only. You can download a copy from this thread. http://www.cnczone.com/forums/showth...9764#post59764
You can also try creating your g-code in KCAM, and running it in TurboCNC. Another option is to download the Flashcut demo. I hear it has a very good .dxf converter that is fully functional in the demo. You can get it here: http://www.flashcutcnc.com