In the future, it would help to post only one problem per thread. It gets confusing having two probles per thread.
O.K. the simple answer is to use the command 'modprobe' ( as root ) to load the correct driver. I don't have teh same card, so I did a google for yoru card, and turned up this;
See if your distro has that driver, or find it, and modeprobe it.
The sound may take a little more effort. I don't run FC4, so first determine if you are using ALSA ( probably are ), or the older sound system, Open Sound System. They both have web sites and list the supported cards, and chip sets. From there you find the driver, and modprobe it.
Much of the trick is figuring out what sound you have. If this is a dual boot system, boot windbloze, and look there for the card type. If it is not dual boot, you can look at the output of 'lspci'. That will tell you what it is, if it is installed on the PCI bus.
Another way to try, get a copy of Knoppix. It is a live CD that will boot from your CD or DVD drive. Hardware detection is very good. If the sound works there, then do a 'lsmod' command and look for the driver that got loaded. Modprobe that in FC4.