OK I've got something for you to try. First, download the GNU tar utility for MS-DOS from ftp://ftp.gnu.org/gnu/tar/. Rename that file to tar.exe and put it in your path somewhere (like your windows directory). Next, make a directory c:\riotemp. Copy the original receiver.arf into this directory. In an MS-DOS window, cd into that directory and run the command:

tar -xvf receiver.arf

which will untar the original. You'll get some errors when untarring it but don't worry about them. Now delete the receiver.arf file. Then download a copy of my receiver.arf file and place it into this c:\riotemp directory. In your MS-DOS window, run these two commands:

tar --delete -vf receiver.arf ./il-binary.o ./zImage
tar -rvf receiver.arf ./il-binary.o ./zImage

This should delete my zImage and il-binary.o file and replace it with the original versions, respectively.

That should leave you with a receiver.arf that will work with HPNA. As I don't have HPNA set up, I really can't test this, but I don't see why it won't work. Let me know how it works out!