Hello, thank you for the assistance. To answer your first question, I use Comcast Cable, which I do not believe utilizes PPPoE.
In an attempt to ipconfig both computers, I've run into two small issues. First, on the Computer 2 (winXP), how do I copy/paste command prompt text? Second, on Computer 1 (Win7), when I type ipconfig in the command prompt it tells me that "IPCONFIG is not recognized as an internal or external command, operable program or batch file."