Well, I think the best thing to do would be to figure out what that time server is, and just put it back as it was.
So, I did a quick Google search, and came up with this page
»www.windowsnetworking.co ··· -R2.html
On that page, is the picture that I posted above.
The time server that is listed is "time.windows.com".
If my memory is correct, that is what is setup by default in Windows 7.
Hope that helps.
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