It is a DHCP.
I'm not sharing or using a router right at this time, but in a few weeks, I'll have wireless home networking.
My network card is an "Intel 82558-based integrated ethernet with Wake on LAN".
I'm pretty sure that it is detected by my system, because when I type in "Ifconfig", it comes up with 0 errors.
I don't know what you mean by typing in Ismod into the linux CLI, and when I tried to go to etc/network/interfaces, it said it was not a real directory. I went into /etc, and could not find network or anything like it anywhere.
At startup, it doesn't say any errors, and the only thing it says about eth0 is when it pulls up the interface.
Hope that helps!