I finally had a new computers built and I want to network it with my XP box, I have a wireless router that I set up for my Direct TV, I was told that I could ause a cross over cable or better yet use this router. I have rad a few articles in the Net but I wanted to make sure I will not be messing up things. Here is a photo of the router, do I need an ethernet cable, how do I write the groups that you need to set up the two computers?