Simply follow the usual method of creating the guest, using the -f
parameter and providing the filename of your VMX configuration file:
# xend start
# xm create /etc/xen/vmxguest.vmx
In the default configuration, VNC is on and SDL is off.
Therefore VNC windows will open when VMX guests are created. If you
want to use SDL to create VMX guests, set sdl=1 in your VMX configuration file. You can also turn off VNC by setting vnc=0.