Hi All, I feel really happy now, and I can't explain what my feeling now. Because I just set up a ISA Server with VPN, and I could connect it from my home(WinXP) with cable modem. Then I want to share my experience. Yeah~ Firstly, I set up a ISA with real IP in the eth port and LAN port with virtual IP(192.168.1.1), one qmail server is behind it with virtual IP(192.168.1.2), that mean connect to LAN port. Feel happy? Then set the VPN in ISA Server, that can release virtual IP (192.168.1.3 - 192.168.1.253) to remote VPN client. Anything is going fine, then took a test now. I tried to connect it from my home. just click Start-->Setting-->Network & Dial-Up Connections-->Make A New Connection. Just set your VPN real IP for connection. Finally, disable the default gateway in the connection properties. Here we go~~~~ try to ping the virtual IP, yahoo.com...did it work??? and try to trace route also. Maybe my explanation isn't well, so please contact to me, if you have any problem. Thanks guys