how to rebuild a kernel package on amd64?

Sat Sep 1 13:37:52 UTC 2007

Hi,
There is a -xen linux-image but only for i386.
I expected gettting the kernel package source on my amd64 version and 
rebuilding the package would build a -xen image for my arch.

I see it did not, because built packages are not xen kernels but 
"simple" kernels.

I want at least try to build it. It might have been blocked in some rule 
script, I dont know,...

Would you indicate me where to check?
Thank you.

PS: How tohave my posts accepted in the -devel list? Who to contact?