Keyword Generator/Manager

[Rocketboy]

First off, no, it's not for a website that I'm trying to sell Google adds on... 

But I do work with documents most of the day, and I do have to make sure that they are easily searchable (in a private online kb, or in e-mail folders), so I like to use keywords.

Unfortunately, as I have yet to find a better way, every time I create a new document, I have to manually go through the article, and my list of 100 or so keywords every time.

So my question to the masses, does anyone know of a free/cheap tool that will parse through a list of keywords and a document, and generate a list of matches?

[slowmaker]

Maybe concordance programs?

[skwire]

So my question to the masses, does anyone know of a free/cheap tool that will parse through a list of keywords and a document, and generate a list of matches?

Something like this might be easily done but it depends on the type of documents.  Also, what sort of output, exactly, are you looking for?