virtual machine manager and qemu/kvm in f7

In fc6 I had to use directly command line, with qemu 0.8.2 and kvm-12. Now I upgraded my x86_64 system to f7 and I have qemu 0.9, kvm-19, libvirt 0.2.2 and virt-manager 0.4. In fc6 I created a qemu/kvm windows xp machine and the command line I used to run it was: qemu-kvm -m 512 -hda winxp_kvm/hda.img -localtime -no-acpi -soundhw es1370 Now I'm testing virt-manager and I was able to "install" (actually sort of import pointing the hd and simulating install and then rebooting) the vm in virt-manager, but I'm not able to get the correct network config. Previously, not specifying anything on command line, the "Userspace SLIRP stack" was used (see also http://libvirt.org/format.html). How can I replicate this in virt-manager? It seems I have not the option... I would also like to know if I can specify other qemu options such as: sound hw, the -localtime option (necessary for my clock that appears wrong now when I run win xp from virt-manager) -no-acpi Thanks in advance, Gianluca