I am with a company that is about to grow a great deal in a short amount of time. The plan has been to set up a vpn between the offices but that was before we realized that we were going to grow exponentially in 1 to 2 years. In any event the vpn is not a solution for that size network with that rate of growth. Can anyone recommend some resources to give a good cost analysis and feature description of the different types of WAN technologies?