When I run ifconfig to check my network interfaces I get this for eth0:
eth0 Link encap:Ethernet HWaddr 00:40:05:81:60:8E inet addr:192.168.0.4 Bcast:192.168.0.255 Mask:255.255.255.0 ... The entry "inet addr:192.168.0.4" should be "inet addr:192.168.0.2". What file do I alter to reset this?
I am guessing that your IP address unexpectedly changed and you want it to always be the same, e.g. because you forward some outside port(s) to the fedora machine. If so:
Fedora was probably set up to get an address from the router by DHCP. If your router supports static DHCP, just configure it so that it always hands out the same address to fedora.
If not, you should assign a static IP to your box. If you want it to be 192.168.0.2, first set the router's DHCP server so that the range of addresses it hands out does not include 192.168.0.2. Next, if some other host on your LAN is currently using 192.168.0.2, reboot it or otherwise cause it to get a new IP from the router. Then, go to System Settings->Network, and edit the settings for eth0 to have a statically set IP address. You probably want Address: 192.168.0.2 Subnet mask: 255.255.255.0 Default gateway address: 192.168.0.1 (if that's the router's LAN address)
Also, check the DNS tab, and enter your ISP's DNS servers if needed.
--Stewart