Turns out that Acrobat Distiller 5 is so old, it has no *.inf driver installer files at all. I tried to 'find' the XP's Acrobat Distiller 5 as a new printer in order to 'print' to it over the network, but the Win 7 machine asked for an *.inf driver installer file. The other day, I had a web page up on the new Win 7 machine, and I wanted to 'print' it to pdf. I have almost nothing on that machine, as I haven't had a chance to migrate anything from the old XP to the new dual-boot.
Now, on my home network, I have a new PC dual-booting Win 7 Pro SP1 64-bit and Win 8.1 Pro 64-bit. I can 'print' to Distiller and make a pdf.