Is that supposed to be before or after I get GNU/Hurd booted. I
couldn't find aptitude or apt-get on the installation CD. I was able to
find a floppy image of some kind online, but I haven't been successful
in installing it to hard drive using the floppy image. Maybe once I get
the network figured out I might be able to use apt-get to grab grub-disk.
Well, if I had understand your question you are looking to boot Debian
GNU/Hurd just after install it. Currently the "hurd-installer" dont
install GRUB, wich is needed to boot the system propely. So, you will
need to get one Debian GNU/Linux machine and then use aptitude or
apt-get to download grub-disk package. With floppy images on the hand
you will be able to boot up Debian GNU/Hurd.
Full detailed information about the currently installation method can be found here [1].
I'd have to say that Hurd really needs to be easier to install if it is
going to gain traction against Linux.