Hello, I have a business in two different cities. I would like to create a VPN between the two offices. I have three PCs running at each location with DSL for internet access on both of them. The three computer at each location are networked using a linksys router. I would like to know what other equipment might be necessary to create a VPN, what equipment that I have right now would be useful and what type of configuration needs to be done. I am just starting in networking, I have basic background but would like to get more experience in setting up my VPN