I know we can do this with PPTP on the RV routers. Any other linksys VPN routers that we can resell (and NOT change the firmware), and do this with? Clients are almost always XP (home & PRO), maybe a few 2K, a few behind NAT firewalls, all clients/routers are DHCP/PPoE (dynamic IP). Can we use Cisco's client with any linksys VPN routers? Any other clients that alow VPN connection before Windows domain login?