Hello ,
             I am using xen 3.03  redhat rpm on RHEL 5 tikanga. Now i am trying to boot Fedora 12 as DomU using paravirtualization.
I installed F12 using the virt manager. Its booting fine but network is not working. Its giving error like:

#  Bringing up interface eth0:  xennet device eth0 does not seem to be present, delaying initialization.

After googling i came to know that xennet and xenblk drivers are missing. So how can i now build xennet into the F12 DomU kernel.  

The xennet and xenblk drivers are missing .

What should i do next?  Any guidance.