No eth0 after upgrade to F10

[Boricua]

Unless someone helps me getting out of this hole, I might need to install F10 from scratch .
I tried preupgrade and went from F9 64 bit to F10 64 bit. Before doing so, I was already having some problems with my internal ethernet port loosing connection but was (logically) working at the time I used preupgrade. So far, this has been my only problem using preupgrade.
The system now reports "no network device available". I already tried with and without using Network Manager (as I did with F9). The closest thing I have found so far is this thread:

http://www.fedoraforum.org/forum/sho...d.php?t=197406

Based on the commands I found there, here's the output I got:

[Francisco@localhost ~]$ su -
Password: 
[root@localhost ~]# /sbin/ifconfig
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:124 errors:0 dropped:0 overruns:0 frame:0
          TX packets:124 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:10080 (9.8 KiB)  TX bytes:10080 (9.8 KiB)

[root@localhost ~]# dmesg | grep eth
Driver 'sd' needs updating - please use bus_type methods
Driver 'sr' needs updating - please use bus_type methods
[root@localhost ~]# "dhclient eth0" //
-bash: dhclient eth0: command not found
[root@localhost ~]# dhclient eth0
Device "eth0" does not exist.
Cannot find device "eth0"
[root@localhost ~]# dhclient eth1
Device "eth1" does not exist.
Cannot find device "eth1"
[root@localhost ~]# lscpi -v|grep -i ethernet
-bash: lscpi: command not found
[root@localhost ~]# lspci -v|grep -i ethernet
00:19.0 Ethernet controller: Intel Corporation 82566DC Gigabit Network Connection (rev 02)
[root@localhost ~]# ifconfig -a
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:668 errors:0 dropped:0 overruns:0 frame:0
          TX packets:668 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:55232 (53.9 KiB)  TX bytes:55232 (53.9 KiB)

[root@localhost ~]#

I'm using my wife's machine to send this message so I'm close to mine. Every bit of help appreciated.