Disable Windows Live Messenger Update Alert

First make a back of msnmsgr.exe, inside the MSN Messenger folder, in case anything goes wrong or you what to go back to original later.
Then open that with res hacker, on the left locate the "version info" -> "1" -> 1033

Now on the right side, you need to change the originals values to:
FILEVERSION 8,5,1302,1018
PRODUCTVERSION 8,5,1302,1018
and
VALUE "FileVersion", "8.5.1302.1018"
VALUE "ProductVersion", "8.5.1302.1018"


or whatever is latest version is there..




now Save it n enjoy a smooth chating without updating