Running 'linux rescue' from the RC1 bootnet.img floppy fails after loader 
passes control to anaconda.real.  Anaconda prompted for the location of 
the FTP server I'm using, and loaded the / and /usr ramdisk images.  Then 
after loader calls anaconda.real, the screen says:

Traceback (innermost last):
  File "/usr/bin/anaconda.real", line 216, in ?
    import rescue
ImportError: No module named rescue
install exited abnormally
sending termination signals...done
.... rest of shutdown routine

VT3 shows that netstg1.img and netstg2.img were transferred, and that the 
drivers I need were properly loaded.