Building the kernel

["Clay Dillard" <cdillard@nc.rr.com>]

Can anyone help me find resources that go through, step by step, the process
of building an OpenBSD kernel?  I want to upgrade the default install of
IPfilter on OBSD 2.9 to the latest version and have trouble building the
kernel.  I have read the mini how-to's and checked out many mailing list
archives but most of the information assumes that the reader is already
familiar with building kernels.

Thanks in advance,

Clay