Tell what chapters of what book or what URL you used to set this up. It's not something you go click-click-click and it works.
Tell if your linksys routers are VPN routers.
I have set up a vpn between a windows xp computer in one building to communicate with a windows 2000 server in another one nearby. My problem is I make the vpn connection and once it is established, no data flows from the server or the network attached to it to the xp machine. Both computers are behind dsl routers, but I have opened the port 1723 and 4899 on both. I have been to the server and it says it is receiving a connection from the remote computer, and the remote says it has logged in successfully.