I have to remember that Chile has a reciprocity fee to enter the country. For US citizens, it is $100. We charge Chile citizens the same amount for a visa to visit USA so they are just turning around and charging it back. It will be paid at the airport in USD cash. Here's a current page from Frommer's.
I've been looking for other boards to research the latest. NWHiker board suggested rec.travel groups for Latin America. rec.travel.latin-america I did some searching and it is not too bad. I noticed another member from Travelzine had been there also. We exchanged emails this week. She is leaving on November 4th and will return on the 19th. We will have to try to connect when I get back.
Another place was the Lonely Planet Board, Lonely Planet Online | The Thorn Tree. It has a few interesting threads. So far the best has been Fodors, Travelzine and rec.travel.latin-america.
Here are some great pictures of Chile. We will not be visiting the Geyers but we will be in Santiago and Pucon. Chile 2001