I'm using QtEmu to virtualize ReactOS..
i'm very happy to see "ReactOS" on new-machine Wizard...
but, qtemu-default ethernet card cannot be automatically installed using this OS
...well on qemu ( win ) i use this string to obtain a perfectly working configuration (qemu 0.11)
QEMU -L "QEMU" -M pc -m 192 -kernel-kqemu -cpu qemu32 -vga cirrus -name React-IT -hda image.vmdk,index=0,media=disk -boot c -soundhw ac97,pcspk
with this, Reactos install a NATted ethernet card, recognized as a RTL 8029.. (yes... Kqemu don't works on qemu 0.12 )
at least.. Ethernet works (with no external drivers ) using the PCNet fast III (nat)
ReactOS have some troubles with Realtek 8139.. that card cannot be used with this OS ( at this time )
QtEmu and ReactOS
c

ReactOS
Sorry for the SLOOOW reply and the lack of work on qtemu in the recent past, i'm finishing up my bachelor's and it seems to take time form the things I like to do :)
In any case, Although there is a selection for OS, qtemu does not YET use this to customize the hardware, although that is EXACTLY the sort of thing this selection is for. when I have a few spare moments this will not be hard to put in. Thanks!