Abstract
How to submit a patch to the project (assumes you do not have a CVS account).
Since ReactOS does not have a definite maintainer for each section of the code, you should mail ros-kernel and ask for someone to accept the patch.
cvs diff -up file1 file2 > mypatch.diff
cd <top-directory-for-all-changed-files> cvs diff -up > mypatch.diff