How to reverse an, "Always block..." on Norton?

I was using turbo lister in Ebay and Norton popped up with a "T.L.ex is trying to connect to the internet", warning, without thinking I clicked to permanently block it (as recommended) but need to unblock it. I know it is a case of setting an exception but cannot find where to do it-any help gratefully received!! Thanks

  PaulB2005 16:54 12 Jan 06

You need to find the Program Control section.

  PaulB2005 16:55 12 Jan 06

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