Here is one "alternative" that we used at the print shop. Be aware that with a newer Mac, and PC, it won't be Feasible, unless you have access to the equipment.
I had to transfer Quark Xpress files from an old Mac 2 to a new P4 box. Both units had external scsi ports, so I hooked up a "switch box" we had lying around and a zip drive. the switch box was really for a printer, but it worked just fine on the scsi. The only real issue is that Windows sometimes had to be re-booted to see the Zip drive, after it was switched to the PC.
(Quark xpress files can be read on both machines with no issues other than putting a ".QXD extension for Windows).
Now the newer Macs probably don't have an external Scsi port, but it might be of interest for some one else out there. :crazy: