Kermit is a good choice, should be able to do all he needs with no extra cost as long as he can cable 2 computers together.
I specifically dislike those telling him to buy a UBS adapter for the old disk drive or other solutions that require spending money and waiting. I do have such an adapter, and a PCMCIA firewire card that would open other options for me, but they are not needed in this case.
Another option that seems to be ignored is that XP computer he says he also has. At that vintage it likely has USB and Ethernet. I would try swapping the drive into that (if it isn't too thick to fit) and booting the XP computer with a Live Linux CD (the 3.11 Windows disk will likely not boot properly and would not have the needed drivers even if it did). Then from Linux you could easily write the 160 meg drive contents to a USB flash drive or transfer it across ethernet to the destination computer (I would do that with FTP but there are any number of options).
If he doesn't know that a NULL modem cable is a viable means of transfer, what makes you think he has a NULL modem cable at all? I would bet he's going to have to spend money or borrow a cable anyway.