Apply a linux patch to a Debian kernel

[nospam@cox.net (Joe User)]

Hi,

I would like to install kernel.org's prepatch 2.4.21-rc7.  I currently
have Debian's 2.4.20 (from kernel-source using kernel-package).  I
noticed that changes were made to the 2.4.20 source to "Debianize" it.

How do I go about applying the patch?  Can I patch the Debian source?
Should I get origional kernel source and patch that, and if so, do I
need to "Debianize" it somehow??   Something else?


Thanks,
Peter