No inet address

I am attempting to follow Bruce Fulton's installation instruction for Ubuntu Server on a Virtual Machine (http://www.youtube.com/watch?v=LGEEfaNzWwQ&feature=related) with the hope of installing Omeka.

I'm not able to obtain an inet address (discussed about 9 minutes into the video). Anyone have suggestions for how I might resolve this issue?

Also, I am not currently connected to a router but directly to a cable modem. Is this why I'm not finding an inet address?

I recommend getting in touch with Bruce about this, since he created that guide.