Have you confirmed the physical network connectivity? Can
you plop windoze laptop on the same connection (config'd to
use dhcp of course) and get an assigned ip? (ipconfig/all or winipcfg).
Is there a link status light on you net card showing you that
you have a connection. Point is, the dhcp server can't assign you an addy if it can't talk to you over the wire
Once it doles out the info you'll have the following file ....
which will have all the network ip info in it.