Our LAN has been evolving over the past 5 years as our business grows, and we recently installed DSL connectivity to the internet and WiFi for additional computers at our main site. We are opening an off site retail location soon, and are considering how to "get connected." We will have one computer at the new location running both Point of Sale software and back office applications, but need to interface with the Home Office on a regular basis. We are thinking about setting up the remote computer with a VPN tunnel to the main LAN, but wonder if we will be able to operate "just like another computer on the LAN," or will firewall and other security issues keep us from experiencing the functionality we seek. Our systems run under WinXP and WinME. Any suggestions on how to proceed?