Then, after putting everything back together, I installed the drivers and whatever so the new card would work. That was pretty easy. I then ran the S-video cable from the desktop to the computer, and nothing happened. I fiddled around with the settings on my new video card (which, again, is new, and therefore entirely unfamiliar to me) and after about 20 minutes, got the image on my computer screen to show on the TV screen, as well. Hooray!
Tested it by watching a few minutes of Burn Notice on Hulu, and it looks fine. Not great, but fine. Today I signed up for a 2-week trial of Netflix (technically our second free trial in about three years) and since we have a Wii, we will be able to stream some high-quality stuff that way.
I've been searching for ways to watch college football and NBA games on the internetz for free. I have had some success, but I'm open to suggestions if anyone has experience in this area.
Tonight we may actually cancel the cable, though now that I think about it, we're not caught up on our shows that are on the DVR, and that may take a few days.