Screen Scraping?

Hello I'm back from the Intro section with my question ......

Basically ... I'd like to know if it possible to glean new text lines from a single simple web page which refreshes every 10 seconds and scrolls off the page as new lines appear. Note that not every page refresh may result in new lines, however, so after the intial page is gleaned, I'd only want the newest lines added.

Some background: The existing application is a server based chat log that our group uses, and I'd like our web clients to be able to not only view the scrolling lines as they can do now, but also to be able to "look back" at earlier lines that have scrolled off the page. Hope that sounds like it makes sense. (In case you're wondering, I am not allowed to grant any other kind of access to the actual chat file itself. The existing browser access is the only means allowed to view this info. They're okay with the approach I'm trying to take here though.)

What I'm thinking of might be known as "screen scraping", but I'm not sure. Rather than programming a solution, I did find a utility that might do what I want, but I'm not sure about that either - still investigating. In the meantime, I just thought I'd pose the question here. If I'm in the wrong place, perhaps someone can square my shoulders in the right direction so I can continue on my way - I've just been struggling a bit with where to find pointers on this kind of thing.

Regards,
- Skip

.... I forgot to mention that the utility I found is called "PageScrape". I don't know yet if it applies to my situation.