Internet Connection Sharing

I tried to set up my xbox to xbox live using the internet connection to my laptop. I'm using Vista.
I followed the instructions in a video on youtube and now i cannot connect wirelessly to the internet. local access only.
When I go to:
Network and Internet | Wireless Network | View Status | Properties
I do not see the "Sharing" tab at the top. I see the "Network" tab, but have lost the "Sharing" tab.
How do I get it back?
I think if I can get it back I can restore my internet connection.
Thanks,
GVG

 

Weird!
I am now wirelessly connected. I went in and changed the TCP/IPv4 settings to automatically obtain IP and it worked.
Now I'm connected, but the Sharing tab is still missing.