One of the most understated advantages of AutoCAD (IMHO) is the fact that .DWG
files are .DWG files PERIOD……. Every .DWG file is a straight binary and
thus platform independent. So moving .DWG files from MAC to IBM, or vice versa
or to any other platform is a non-issue as any platform of AutoCAD sees all
.dwg files as the same and just opens 'em up!
The only issue you may have is in the "physical" transportation of the files
themselves from one hardware to the other. If the machines are connected with
a network then of course you just shoot them back and forth with no problem,
but if you need to move them via "sneaker net" (disks) the machines must be
able to read the other's format.
Hope this helps.
wayne