Sharing Center Shows Multiple Networks

I am running vista and a ethernet cable from Comcast modem/router to my desktop. Everything is working fine and I connect to the internet with no problem. Here is the issue. My son disconnected the ethernet cable and did some other work on the back and forgot to install the cable. tried internet wouldn't work so tried connect to network. Then realized cable was disconnected so re connected and everthing is fine. However, not in our file and sharing center we have two networks showing. the first is the normal one and the second says "unidentified" When I check status they are identical one is a clone of the other. When i check customize my regular connection shows private the unidentified shows public. Everything seems to work ok so I am afraid of messing with it. Does anyone have a simple and SAFE was of deleting this unidentified network? Does this unidentified network use resources to slow down internet connection? Should I just leave it alone? Its been two days since this happened so would system restore solve it? Thank you for any feedback.
In Network and Sharing Center, here's what I have:

This computer____ Multiple Networks____ Internet

Network (Private network)
Access: Local and Internet
Connection: Local Area Connection

Unidentified network (Public network)
Access: Local and Internet
Connection: Local Area Connection

When i open details they are identical, The unidentified is a clone of the regular This Computer network. The internet works fine. I was just wondering if this could slow it down. Thanks for your input and any help I can get.

Found something that might help this.

http://www.annoyances.org/exec/show/article04-500

Worked for me. But only after I read some of the follow up questions. In my case showing multi networks would not allow me Internet access at all via my browsers. I would apply the fix listed in the link but after restart the issue would return. Turns out that when I disabled Bonjour in Run:Services.MSC (program get installed with every version of Itunes and is needed to go to the Itunes store and other stuff.) that the issue went away permanently. You can disable the program from starting up with Windows Vista or you can uninstall it completely but then ITunes won't be all that it can be. I uninstalled everything Apple in my computer. My original Itunes was 7.6.2.9, and then tried re-installing Itunes with newer version 10.7.0.21 and guess what.....installed normally and after a restart issue is no longer showing up. Issue resolved. Very happy ending!!!