Find the following code in inc_subscription.asp (approx. line 283): ShowSubLink = "<input type=""checkbox"" name=""Tnotify"" value=""1"" />Check here to subscribe to this topic."
and replace it with the following code: ShowSubLink = "<input type=""checkbox"" name=""Tnotify"" value=""1"" checked />Check here to subscribe to this topic."
(or add the blue code)