I think the installation procedures are quite just the same, even if the instructions are for SAA7133 and the chip tells it's SAA7131E. They seem to be almost the same, so the instructions should work..so go ahead
I'm sorry if I cannot help you in more detail, because I have no TV-tuner myself. But if you're using Fedora Core 4, it should do some automatical things when you plug the device in (and hey, you had some installation instructions, that's a good thing!), and if it does not (and you're completely out of ideas), try rebooting the machine since that's when FC4 will surely check for new hardware and try to probe it and load some drivers.
But yes, first try following the instructions you have - should you run into troubles, ask here
