when the modem is detected...it is always found as a PCI Serial Controller. Point to the dir u have unzipped the files to and it will change to
HCF Modem Rockwell PCI Enumerator and there will also be in the modem section a listing for ROCKWELL HCF 56k Fax Modem.
These files will work...one thing I tried was to set the files to view as all files and it seemed to work after I did this..or maybe it was a coincidence when it didnt work the first time I tried to install.
I promise these are the files for the modem!
Good luck and I hope I have ended your search!