Reijomie

I made install with that "Set TCP/IP Priority 1" enabled, and then started to wonder, what that option actually does for the install? Does it change some values in registry, or straight in some files? I'd be overjoyed if someone could tell what choosing that option does, and how it can be (if it can be) reversed after installing the Windows XP. I did try googling around for an explanation, but didn't find anything that I could see related to this.