Someone

kernel = '/usr/lib64/xen/boot/hvmloader'
builder = 'hvm'
memory = '512'
device_model='/usr/lib64/xen/bin/qemu-dm'

# Disks
disk = [  'file:/var/xen/WinXP.img,ioemu:sda,w']#,'file:/home/jbeckman/winxp.iso,ioemu:hdc:cdrom,r' ]

# Hostname
name = 'winbuild.spotify.net'

# Networking
#vif = ['type=ioemu, bridge=xenbr0']

# Behaviour
boot='c'
#vcpus=1
#pae=0
#cpus=''
vnc=1
vncviewer=1
sdl=0
#acpi=0
#apic=0
#stdvga=0
#serial='pty'
#ne2000=0