nic card and redhat linux (8)

I am new to linux and I am haveing a problem .. I had linux loaded on my sys before and it loaded the right driver for it then but I had to reload linux {I moved a file somewhere it should have not be moved and it would no longer boot} and this time the nic card does not work?? the nic card works with other os-s and I have reloaded linux 3 or 4 times and still no internet access.. I am using a shuttle
sv-25 and ever thing that I can find tells me to use realtek "rtl8135/810x drivers and on setup that is what it picks and shows under the conf file.. any help would be very helpful and thank you for the help!!

Is it that the card isn't detected, or is it just not loading on boot.
do /etc/rc.d/rc5.d/S10Network start
or ifup eth0
It could also be that the module isn't loaded on boot for the nic. try modprobe ne2k-pci or whatever your module is
If that loads the driver then you can ifup the interface. then add the module name (w/o modprobe) in your /etc/modules.autoload

Or try netconf if it's installed and make sure all the settings are good. and that it's enabled.