Installing CentOS on a Dell PowerEdge 1850 is straightforward, except for one tiny detail you may want to take note. GigE port #1 is your eth0 and GigE port #2 is your eth1 (from right to left). Also, I'm not sure if it's a foobar labeling job, but the Dell PowerEdge 2950 (2U server)'s GigE port #2 is actually eth0 and GigE port #1 is eth1...