The guides are far, far more appropriate - however . . .

I would recommend that you use none of those you
have mentioned.  The first mentioned (securews, ...)
are very old and outdated.  The templates provided
as part of the Security Guide are intended to be used
as examples, as starting points, from which you are to
derive what is appropriate for the specifics of your
machines.

None of these, the first or second mentioned were ever
intended to be used, as is, by just pointing at them and
applying !!

Read the Windows 2003 Security Guide and the companion
Hardening Guide.  Decide what settings address risks that
you face.  You likely would end up with a self-defined
template (and sceregvl.inf) that combines settings from
multiple of the templates.  Use the Security Configuration
and Analysis MMC snap-in to analyze systems first to see
what differs, what use of your template will change.
Possible make copies of your template (copy/paste) which
you edit (notepad or Security Templates MMC snapin) so
that each only applies a part of the settings, which would
allow you to try your selected settings part by part (this
makes it more simple to find which setting is at issue if
you encounter an unexpected complication).

Roger