Yeah, you are right, how glib of me.
A modern system is going to have lots of problems.
Interlink is not going to work.
Laplink is not going to work.
360k drive in a modern pc is not going to work.
Formatting a 1.44m or 720k floppy to 360k is not going to work.
For any of the above to work, Zor is going to need to have something like a 486 with dos or Win95/98. For the Laplink/Interlink options, Zor will also need a null modem cable or the appropriate parallel cable.
About the only thing that will work with an old PC and a modern PC is going to be a terminal in Windows and a terminal on the XT. Then use Z/Xmodem to transfer the files. (this has already been suggested.)
Or create a fat16 partition on your modern PC. Load all of the software onto that partition and boot with a dos disk and then use Laplink or Interlink again with the proper cable.
Or Ethernet (again it's been suggested.)
It being an XT, you can always write your own terminal in basic.