[Fedora-xen] Is guest-os only FC5 ?

[tournesol]

Hi all

I am testing xen-3.0.1-4 on FC5 . when i tried install FC4 (not FC5 )
guest-os with xengust-install.py i got following error.
＃xenguest-install.py
　What is the name of your virtual machine? FC4
How much RAM should be allocated (in megabytes)? 256
What would you like to use as the disk (path)?
/opt/fc4/fc4.img
What is the install location?
http://distro.ibiblio.org/pub/linux/distributions/fedora/linux/core/5/i386/os/
Invalid URL location given

So the guest-os type that supported is only FC5 ?

thanks
tournesol