Oh and Im running Mirc 6.5. latest version just to make sure.
I assume you mean 6.35
Vista has no known reported issues with mIRC sockets since the first officially supported version (and even before that), and afaik winsock has not changed all that much since XP, so I doubt it has anything to do with vista itself. It *could* be the x64 part, but I doubt that too.
Are you sure there isn't some other problem with the script that occurred in copying it over to your new install? Perhaps you aren't opening the socket or something?
Given that you were still making changes to your script in this forum post I find it hard to believe that the script worked in XP, especially since your original script file was incorrect to begin with (the GET request is invalid as mentioned by others). Can you confirm the fact that the original script file "works" in XP? By "original", I mean the script that included the (invalid) line you pasted:
sockwrite checktv GET www.tvrage.com/quickinfo.php?show= $+ %checktv $+ &exact=1 $+ $crlf
I assume your claim about the script working in XP included the above line of code, yes?