Share neverwinter nights 2 patches?

My cousin and i wanted to play neverwinter nights 2 on the lan. he just bought it and is installing it. We both have Mask of the Betrayer expansions. the problem is, his internet has a bandwidth limit of about 500 megabytes, while mine is fully patched. I am uming two different patch versions cannot play the campaign together, but i was wondering if there is a way to share the patch from my computer to his. I downloaded the patches using the NWN2 updater, and I am at his house so I cannot download the patches manually. If there is a way, where would I find the patch files?.