First, download the virtio driver from here and create a virtual disk before installation:
[cc lang="bash"]
wget http://alt.fedoraproject.org/pub/alt/virtio-win/stable/virtio-win-0.1-52.iso && \
qemu-img create -f raw windows.img 40G # Adjust size if you want.
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Then build the guest system with the following parameters:
[cc lang="bash"]
virt-install --name win7 --ram 2048 --vcpus=2 \
--os-type=windows --os-variant=win2k8 --accelerate \
--cdrom=/home/eleven/iso/win7\_OEM.iso \
--disk path=/home/eleven/iso/virtio-win-0.1-52.iso,device=cdrom \
--disk path=/home/eleven/windows.img,format=raw,bus=virtio \
--bridge=br0,model=virtio \
--vnc --vncport=5991 --vnclisten=0.0.0.0
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Finally, fire a VNC client and connect to host ip.