Model: Mac System MW560C1
Operating System: Windows 98SE (Note: might work with other versions of this os.)
File: RWIN9X.zip
Comments:
Linked driver is for Win9X.
NT4 driver is at www.macsysco.com/support/kdownload/driver/softmodem/NT40KOREA.zip
Win2000 driver is at www.macsysco.com/support/kdownload/driver/softmodem/R679312-W2K.zip
If the links are broken, go to www.macsysco.com - then support - then 56K soft. Three variants of the modem are listed so you might wish to download all three just in case. The R6793-12 file worked well for me, the device manager immediately finding the driver and installing it properly.
eMachine's website driver did NOT work for the modem in the machine I was working on. If you have the same problem, give these a try.
BIG THANK YOU to DriverGuide and all who contribute, you've helped me many times.