After a restart, I got everything up and running, including the Presario.
The internet kind of didn't work though, but after another restart, it's
alive and kicking.

But I have another question. In preperation for Xbox 360 launch and some
online Kameo coop, I need to get my current Xbox on Live so I know 360 will
go smoothly. I have to connect the Xbox with a networking cable into
Gateway's ethernet card. For some reason though, when I have the ethernet
card in the 192.168.1.x range that my network is in, the internet doesn't
work. When trying to use the internet, I think it is sending everything
through the ethernet instead of the Wireless PCI.

Is this scenario possible? If so, what settings do I need to have on my
ethernet card and Xbox?

If this doesn't work out, I might be able to buy the wireless adapter for
360, but would prefer to try it with my existing equipment.