I think the problem I'm having is either not knowing which settings I'm supposed to be changing or what configuration I need.
My internet connection is via Airport, with the IP address of the host being 192.168.1.2 (dynamically assigned by the router) and the router 192.168.1.1. I have been trying (and failing) to set up any kind of internet connection for my Windows XP virtual machine and would appreciate some assistance.