Check out this thread on another light weight site. It's got references to a number of folks who've visited Patagonia and various gear suggestions etc.
http://www.backpackinglight.com/cgi-bin/backpackinglight/xdpy/forum_thread/13219/index.html
Also, your thread heading really doesn't convey what you're looking for. I'd suggest you might want to make a similar post in the Trip Plans part of the forum with a heading that includes a reference to Patagonia. I suspect you'll get more responses. Also, you might try the search function on this site. I think there have been some threads on Patagonia travelling that might be helpful.
good luck,
Gerry Magnes
Schenectady, NY