For the ones which are planning to go to Villa O’Higgins: There are no ATM in the village itself nor on the whole way from Cochrane. Creditcards are also not accepted. So make sure to bring with enough cash, especially if you are planning to do the (pretty expensive) crossing to El Chalten.
This is the status of the 15th of January 2010. For updates check http://www.villaohiggins.com.
All the best from Villa O’Higgins,