Trimming data from luasocket returned data

I've been playing with luasocket now that's it's included in 4.60, and I'm trying to scrape some data off of an RSS feed that I can then manipulate. I can get the entire rss page printed, but what I'm trying to do is match a portion of that source, and then put that data into a table. I'm not sure if there's a way to regex it straight from the source that the luasocket returns or what. Can someone clue me in?

Thanks much.

Actually, nevermind! I just went at it from another angle and it looks like I'm working it out.