http://nwvault.ign.com/fms/Download.php?id=122987
This is the one you want if you have the expansion installed, and assuming of course you want the English version.
What you need to do is to download the file, place it in the install directory of your game, still archived mind you, then run the updater. The updater will see the file in your directory and install the patch from there instead of going online. Just make sure you delete the archive file after the install.
If you need something other than the English version here is the page you need to go: http://nwvault.ign.com/View.php?view=NWN2O...etail&id=19