Fedora15 with kvm and spice

[Alex]

Hi,
I have a win7 x86_64 kvm image I created on a fc14 machine that I've
now transferred to a new fc15 machine. I'd like to use the new spice
system to improve video performance. I've searched quite a bit, but
most references seem to be very dated or incomplete.

Is there any documentation on how to properly configure fc15 to use
this? Is spice similar to VNC, in that it provides the remote
emulation and screen updates?

Is there something that needs to be done to modify qemu to work with spice?

I'm currently using the "vga" driver and performance is just horrible.
What is the proper way to get more reasonable video performance on a
win7 guest?

Any ideas greatly appreciated.
Thanks,
Alex