[texhax] tex question

[Karl Berry]

Greetings,

    and I would like to know how to add line
    numbers to a *.pdf manuscript.

I don't know how to add line numbers to a pdf after the fact, but if you
can rerun from source, you might look at the lineno and linenum packages
on CTAN.
http://www.ctan.org/tex-archive/help/Catalogue/entries/lineno.html

There is no 100% guarantee, line numbers are a hard problem in TeX, but
they might get you what you need.

Hope this helps,
Karl