[CentOS] virt-install hell: how to *force* a local CD-ROM install?

I have a CentOS 5.6 system with a AMD Sempron(tm) Processor LE-1300
(which does not provide hardware virtualization support, so I can't use
the --cdrom option) and I am *trying* to install FC15 as a guest O/S
using a local FC15 DVD-ROM image.  Everything work until the installer
*insists* on firing up the network to get the repo data, etc.  I have a
*dial-up* Internet connection and this is a *desktop* machine and is
thus pretty much anchored where it is. I have googled this, but it
seems no one uses local DVD images.  (Of cource *everyone* in the world,
except for rural America, has broadband.)

I was able to install FC15 on a old IDE disk connected via a USB port
after booting a burned copy of the DVD.  *Everything* needed to install
the *minimual* system I want to install is there on the DVD, but I can't
seem to get the FC15 installer to believe that.  I *don't* want or need
the updates at this time (maybe later).

Oh, and the virt-viewer is chopping off the right third of the graphical
display. Is there any way to fix that?  It would let me resize the
viewer window and does not provide scroll bars, etc.  Or is the FC15
installer having a stupid idea of the virtual machine virtual monitor
size? Can *that* be changed (the virtual machine's virtual monitor size)?

The command line I am using is:

sudo virt-install --name=fc15guest --ram=1024 --os-type=linux \
	--os-variant=fedora12 \
	--location=/distrocds/Fedora/Fedora-15-x86_64-DVD.iso \
	--disk="path=/dev/sauron/fc15guest"

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