Card Network Problem

[ma1camoj at uco.es]

I apologize if the question is a old  post.
My question:
After a new FC6 installation, the network card not operate
Why verification I do:
1) Network Configuration ==>Activate
system-config-network Message ==> e100 device eth0 does not seem to be  
present, delaying initialization
2) gedit /etc/modprobe.conf ====> alias eth0 e100
3) ifconfig eth0up ====> eth0: unknown interface: No such device
4) lsmod ====>  Module  Size Used by .....  e100 40393 0 ...

I appreciate any help.
Juan Antonio.