xen, how to boot a 2.4 kernel distro in FC4

[Dan Track]

Hi

Can someone please help to find a way, while also getting an
understanding as to how to boot a 2.4 kernel distro, in my case rhel
3, as domU under the 2.6 kernel dom0 from FC4.

I'm having problems. Basically I initially though that running a Xen
kernel would allow me to boot any os as a domU no matter what their
kernel was, but I think I have been mistaken with this. I am running
into problem while booting this.

I would really appreciate any help provided. 

Many Thanks
Dan