Right after you buy your timeshare, you will probably be interested in joining or using a timeshare exchange company. These companies are typically affiliated with your timeshare resort and will assist you in exchanging your timeshare for a comparable resort. Resort Condominiums International (RCI) and Interval International (II) are the two oldest and largest exchange companies in the world. Membership and Exchange fees are minimal. They offer timeshare catalogs, complete with descriptions and pictures of mega amounts of resorts all over the world. While these are the two most predominate companies there are a increasing amount of smaller independent exchange companies that are quickly and easily fulfilling trade requests like Trading Places, Donita's Exchange and the San Francisco Exchange Company.